CIRCLE CALCULATOR CODE

Sunday, 27 September 2015

CIRCLE CALCULATOR CODE

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COPY AND PASTE BELOW CODE IN POST HTML SECTION
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<html>
<head>
<style type="text/css">
.CalcTable {
padding: 4px 6px;
border: solid #ddd 1px;
border-collapse: collapse
}
.CalcTitleCell {
background-color: transparent;
color: #1d487e;
font-family: Verdana, Arial, sans-serif;
font-size: 130%;
font-weight: bold;
text-align: center;
height: 30px
}
.CalcInstructCell {
padding: 5px;
border-bottom: solid #ddd 1px
}
.CalcRowTitleCell {
background-color: #ccc;
color: #1d487e;
font-family: Verdana, Arial, sans-serif;
font-size: 85%;
font-weight: bold;
text-align: left;
border: solid #ddd 1px
}
.CalcColCell {
background-color: #1d487e;
color: #fff;
font-family: Verdana, Arial, sans-serif;
font-size: 100%;
font-weight: bold;
text-align: center;
border: solid #ddd 1px
}
.CalcColCellLeft {
background-color: #1d487e;
color: #fff;
font-family: Verdana, Arial, sans-serif;
font-size: 100%;
font-weight: bold;
text-align: left;
padding-left: 5px;
border: solid #ddd 1px
}
.CalcColCellRight {
background-color: #1d487e;
color: #fff;
font-family: Verdana, Arial, sans-serif;
font-size: 100%;
font-weight: bold;
text-align: right;
border: solid #ddd 1px
}
.CalcRowOdd {
background-color: #eee
}
.CalcRowEven {
background-color: #fff
}
.CalcInDescCell {
padding-left: 5px;
padding-right: 5px
}
.CalcOutDescCell {
text-align: left
}
.CalcInFldCell {
text-align: right;
padding-right: 5px;
font-size: 8pt
}
.CalcOutFldCell {
text-align: right;
padding-right: 5px;
border-left: solid #ddd 1px;
border-right: solid #ddd 1px;
font-size: 8pt
}
.CalcInFld {
font-size: 8pt
}
.CalcInFldFix {
font-size: 8pt
}
.CalcSelectFix {
font-size: 8pt
}
.CalcOutFldOddFix {
border: medium none;
background-color: #eee;
font-weight: normal;
text-align: right;
font-size: 8pt
}
.CalcOutFldEvenFix {
border: medium none;
background-color: #fff;
font-weight: normal;
text-align: right;
font-size: 8pt
}
.CalcOutFldOdd {
border: medium none;
background-color: #eee;
font-weight: normal;
text-align: right;
font-size: 8pt
}
.CalcOutFldEven {
border: medium none;
background-color: #fff;
font-weight: normal;
text-align: right;
font-size: 8pt
}
.CalcOutFldBoldOdd {
border: medium none;
background-color: #eee;
font-weight: bold;
text-align: right;
font-size: 8pt
}
.CalcOutFldBoldEven {
border: medium none;
background-color: #fff;
font-weight: bold;
text-align: right;
font-size: 8pt
}
.CalcButtonCell {
text-align: center;
border: solid #ddd 1px
}
.CalcButton {}.CalcSummaryCell {
padding-left: 5px;
padding-right: 5px;
background-color: #fff;
border: solid #ddd 1px
}
.ChartTable {
border-collapse: collapse
}
.ChartBody {}.ChartColHead1 {
background-color: #1d487e;
color: #fff;
font-family: Verdana, Arial, sans-serif;
font-size: 100%;
font-weight: bold;
text-align: center;
border: solid #ccc 1px
}
.ChartColHead1Small {
background-color: #1d487e;
color: #fff;
font-family: Arial, sans-serif;
font-size: 80%;
font-weight: bold;
text-align: center;
border: solid #ccc 1px
}
.ChartColHead2 {
background-color: #ccc;
color: #1d487e;
font-family: Verdana, Arial, sans-serif;
font-size: 85%;
font-weight: bold;
text-align: center;
border: solid #ddd 1px
}
.ChartRowOdd {
background-color: #eee
}
.ChartRowEven {
background-color: #fff
}
.ChartTextCell {
text-align: center;
padding-left: 2px;
padding-right: 2px;
border: solid #ddd 1px
}
.ChartTextCellLeft {
text-align: left;
padding-left: 2px;
padding-right: 2px;
border: solid #ddd 1px
}
.ChartNumCell {
text-align: right;
padding-left: 2px;
padding-right: 2px;
border: solid #ddd 1px
}
.ChartNumCellSmall {
font-family: Arial, sans-serif;
font-size: 85%;
text-align: right;
padding-left: 2px;
padding-right: 2px;
border: solid #ddd 1px
}
.ChartSubCell {
text-align: right;
border-top: solid #000 2px;
border-left: solid #ddd 1px;
border-right: solid #ddd 1px;
font-weight: bold;
background-color: #ccc;
padding-left: 4px;
padding-right: 2px
}
.ChartTotCell {
text-align: right;
border-top: double #000 3px;
border-bottom: double #000 3px;
border-left: solid #ddd 1px;
border-right: solid #ddd 1px;
font-weight: bold;
background-color: #ccc;
padding-left: 4px;
padding-right: 2px
}
#dhtmltooltip {
position: absolute;
left: -300px;
width: 150px;
border: 1px solid #000;
padding: 2px;
background-color: #ffffe0;
visibility: hidden;
z-index: 100;
filter: progid: DXImageTransform.Microsoft.Shadow(color=gray, direction=135)
}
#dhtmlpointer {
position: absolute;
left: -300px;
z-index: 101;
visibility: hidden
}
.div_help {
font-family: arial, verdana, helvetica, sans-serif;
font-size: small;
text-align: left;
padding: 10px
}
.SideCalcTitleCell {
font-size: 100%;
background-color: #000;
font-weight: bold;
color: #fff
}
.SideCalcResult {
text-align: right;
width: 94%;
background-color: #eee;
border: solid #000 1px;
font-family: arial, sans-serif;
font-size: 11pt;
color: #000;
padding-right: 5px
}
.SideCalcNum {
font-weight: bold;
width: 30px
}
.SideCalcSign {
font-weight: bold;
color: #00f;
width: 30px
}
.SideCalcClr {
font-weight: bold;
width: 30px;
color: red
}
.SideCalcClrTape {
font-weight: bold;
width: 94%;
color: #000
}
.SideCalcTapeCell {
text-align: center;
background-color: #ccc;
border-top: solid #ccc 1px;
border-left: solid #ccc 1px;
border-right: solid #ccc 1px;
border-bottom: dashed #000 1px;
font-family: courier, arial, sans-serif;
font-size: 10pt;
color: #000;
padding-right: 0px;
padding-left: 0px
}
.BelowCalcTable {
border-collapse: collapse
}
.BelowCalcAdCell {}.BelowCalcColHead {
background-color: #ccc;
color: #1d487e;
font-family: Verdana, Arial, sans-serif;
font-size: 85%;
font-weight: bold;
text-align: center;
border: solid #ccc 1px
}
.BelowCalcImgHead {
background-color: #ccc;
text-align: center;
border: solid #ccc 1px
}
.BelowCalcLinkCell {
text-align: left;
padding-left: 2px;
padding-right: 2px;
border: solid #ddd 1px
}
.sppTable {
width: 300px;
border-collapse: collapse
}
.sppRow {
background-color: #ddd
}
.sppColHead {
background-color: #fff;
color: #1d487e;
font-family: Verdana, Arial, sans-serif;
font-size: 85%;
font-weight: bold;
text-align: center;
width: 240px;
border-left: solid #8f8fb3 1px;
border-top: solid #8f8fb3 1px
}
.sppImgHead {
background-color: #fff;
text-align: center;
width: 60px;
border-right: solid #8f8fb3 1px;
border-top: solid #8f8fb3 1px
}
.sppLinkCell {
font-size: 85%;
text-align: left;
padding-left: 2px;
padding-right: 2px;
border-left: solid #8f8fb3 1px;
border-bottom: solid #8f8fb3 1px;
border-right: solid #8f8fb3 1px
}
.fb_like_button {
border: 1px dotted #000;
background-color: #eee;
padding: 10px;
width: 320px;
float: right
}
.blogItItem {
margin: 18px 0;
padding: 0 12px;
border: 1px solid #ccc;
background: #eee;
box-shadow: 4px 4px 4px #ccc
}
.blogItItem h6 {
font-style: normal;
font-weight: normal;
font-size: 80%
}
.leftnav_heading {
text-align: center
}
.leftnav_heading a {
font-family: Arial, Helvetica, sans-serif;
font-size: 15px;
text-align: left;
line-height: 14px;
background-image: url(http://www.free-online-calculator-use.com/image-files/xbtn_leftnav.png.pagespeed.ic.42XqZUCWky.png);
color: #333;
text-decoration: none;
width: 169px;
height: 41px;
display: block;
font-weight: bold;
margin-top: 18px
}
.leftnav_heading a:hover {
background-image: url(http://www.free-online-calculator-use.com/image-files/xbtn_leftnav_up.png.pagespeed.ic.BPrNWsjR1R.png)
}
.leftnav_heading span {
display: block;
padding: 7px
}
.texttop {
font-size: 15px;
line-height: 14px;
color: #333;
text-shadow: 0px 0px 2px #fff;
margin-bottom: 10px
}
.textbottom {
color: #333;
font-size: 15px;
text-shadow: 0px 0px 2px #fff
}
#mobileBtnDiv {
display: none
}
@media only screen and (max-device-width: 640px) {
#mobileBtnDiv {
display: block;
width: 100%;
text-align: center;
padding: 10px
}
#mobileBtn {
display: inline-block;
text-align: center;
width: 50%;
font-size: 2em;
line-height: 2em;
background-color: #0f5378;
color: #fff;
text-decoration: none;
border-radius: 10px;
border: 1px solid #fff
}
#mobileBtn:hover {
background-color: #4cc2ce;
color: #087197
}
}
</style>

<script>
var mod_pagespeed_SxS9ChgsjW = "function clear_ins(m){if(m==\"area\"){document.getElementById(\"circ\").value=\"\";document.getElementById(\"diam\").value=\"\";document.getElementById(\"radi\").value=\"\";}else\nif(m==\"circ\"){document.getElementById(\"area\").value=\"\";document.getElementById(\"diam\").value=\"\";document.getElementById(\"radi\").value=\"\";}else\nif(m==\"diam\"){document.getElementById(\"circ\").value=\"\";document.getElementById(\"area\").value=\"\";document.getElementById(\"radi\").value=\"\";}else\nif(m==\"radi\"){document.getElementById(\"circ\").value=\"\";document.getElementById(\"diam\").value=\"\";document.getElementById(\"area\").value=\"\";}\nclear_results(document.calc);}\nfunction change_places(form){var v_area=sn(document.calc.area.value);var v_circ=sn(document.calc.circ.value);var v_diam=sn(document.calc.diam.value);var v_radi=sn(document.calc.radi.value);var cnt=0;if(v_area>0){cnt+=1;}\nif(v_circ>0){cnt+=1;}\nif(v_diam>0){cnt+=1;}\nif(v_radi>0){cnt+=1;}\nif(cnt>0){calc_circle(document.calc);}}\nfunction calc_circle(form){var v_area=sn(document.calc.area.value);var v_circ=sn(document.calc.circ.value);var v_diam=sn(document.calc.diam.value);var v_radi=sn(document.calc.radi.value);var cnt=0;if(v_area>0){cnt+=1;}\nif(v_circ>0){cnt+=1;}\nif(v_diam>0){cnt+=1;}\nif(v_radi>0){cnt+=1;}\nif(cnt!=1){alert(\"One and only one field can have an entry in it. Please clear all fields accept the known variable you wish to enter.\");document.calc.area.focus();}else{var v_places=document.calc.places.selectedIndex;var a_area=0;var a_circ=0;var a_diam=0;var a_radi=0;var expl=\"\";if(v_area>0){a_radi=Math.sqrt(v_area/Math.PI);a_circ=Math.PI*(a_radi*2);a_diam=a_radi*2;document.calc.circ_out.value=fns(a_circ,v_places,0,0,0);document.calc.diam_out.value=fns(a_diam,v_places,0,0,0);document.calc.radi_out.value=fns(a_radi,v_places,0,0,0);expl+=\"If you know a circle has an Area (A) of \"+v_area+\" square units, you can calculate Radius (r), \";expl+=\"Diameter (D), and Circumference (C) as follows:<br /><br />\";expl+=\"<table class='ChartTable'>\";expl+=\"<tr>\";expl+=\"<td>r = √ (A ÷ π)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = √ (\"+v_area+\" ÷ 3.14159)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = √ (\"+(v_area/3.14159)+\")</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = \"+a_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = π * (r * 2)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = 3.14159 * (\"+a_radi+\" * 2)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = 3.14159 * (\"+(a_radi*2)+\")</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = \"+a_circ+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>D = r * 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>D = \"+a_radi+\" * 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>D = \"+a_diam+\"</td>\";expl+=\"</tr>\";expl+=\"</table>\";}else\nif(v_circ>0){a_diam=v_circ/Math.PI;a_radi=a_diam/2;a_area=Math.PI*a_radi*a_radi;document.calc.area_out.value=fns(a_area,v_places,0,0,0);document.calc.diam_out.value=fns(a_diam,v_places,0,0,0);document.calc.radi_out.value=fns(a_radi,v_places,0,0,0);expl+=\"If you know a circle has a Circumference (C) of \"+v_circ+\", you can calculate Area (A), \";expl+=\"Diameter (D), and Radius (r) as follows:<br /><br />\";expl+=\"<table class='ChartTable'>\";expl+=\"<tr>\";expl+=\"<td>D = C ÷ π</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>D = \"+v_circ+\" ÷ 3.14159</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>D = \"+a_diam+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = D ÷ 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = \"+a_diam+\" ÷ 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = \"+a_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = π * r * r;</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = 3.14159 * \"+a_radi+\" * \"+a_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = \"+(3.14159*a_radi)+\" * \"+a_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = \"+a_area+\" square units</td>\";expl+=\"</tr>\";expl+=\"</table>\";}else\nif(v_diam>0){a_radi=v_diam/2;a_circ=Math.PI*(a_radi*2);a_area=Math.PI*Math.pow(a_radi,2);document.calc.area_out.value=fns(a_area,v_places,0,0,0);document.calc.circ_out.value=fns(a_circ,v_places,0,0,0);document.calc.radi_out.value=fns(a_radi,v_places,0,0,0);expl+=\"If you know a circle has a Diameter (D) of \"+v_diam+\", you can calculate Area (A), \";expl+=\"Circumference (C), and Radius (r) as follows:<br /><br />\";expl+=\"<table class='ChartTable'>\";expl+=\"<tr>\";expl+=\"<td>r = D ÷ 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = \"+v_diam+\" ÷ 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>r = \"+a_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = π * (r * 2)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = 3.14159 * (\"+a_radi+\" * 2)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = 3.14159 * (\"+(a_radi*2)+\")</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = \"+a_circ+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = π * r * r;</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = 3.14159 * \"+a_radi+\" * \"+a_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = \"+(3.14159*a_radi)+\" * \"+a_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = \"+a_area+\" square units</td>\";expl+=\"</tr>\";expl+=\"</table>\";}else{a_diam=v_radi*2;a_circ=Math.PI*(v_radi*2);a_area=Math.PI*Math.pow(v_radi,2);document.calc.area_out.value=fns(a_area,v_places,0,0,0);document.calc.circ_out.value=fns(a_circ,v_places,0,0,0);document.calc.diam_out.value=fns(a_diam,v_places,0,0,0);expl+=\"If you know a circle has a Radius (r) of \"+v_radi+\", you can calculate Area (A), \";expl+=\"Diameter (D), and Circumference (C), as follows:<br /><br />\";expl+=\"<table class='ChartTable'>\";expl+=\"<tr>\";expl+=\"<td>D = r * 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>D = \"+v_radi+\" * 2</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>D = \"+a_diam+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = π * (r * 2)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = 3.14159 * (\"+v_radi+\" * 2)</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = 3.14159 * (\"+(v_radi*2)+\")</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>C = \"+a_circ+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td> </td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = π * r * r;</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = 3.14159 * \"+v_radi+\" * \"+v_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = \"+(3.14159*v_radi)+\" * \"+v_radi+\"</td>\";expl+=\"</tr>\";expl+=\"<tr>\";expl+=\"<td>A = \"+a_area+\" square units</td>\";expl+=\"</tr>\";expl+=\"</table>\";}\nvar v_summary=\"<br /><img src='image-files/calcy-pointer-right.jpg' width='60' height='54' class='ItemLeft' />\";document.getElementById(\"summary\").innerHTML=v_summary+\"\"+expl+\"<br><br>\";}}\nfunction clear_results(form){document.calc.area_out.value=\"\";document.calc.circ_out.value=\"\";document.calc.diam_out.value=\"\";document.calc.radi_out.value=\"\";document.getElementById(\"summary\").innerHTML=\"\";}\nfunction reset_calc(form){document.getElementById(\"summary\").innerHTML=\"\";document.calc.reset();}";
var mod_pagespeed_PJWHvBYF1j = "var offsetfromcursorX=12\nvar offsetfromcursorY=10\nvar offsetdivfrompointerX=10\nvar offsetdivfrompointerY=14\ndocument.write('<div class=\"div_help\" id=\"dhtmltooltip\" onClick=\"hideddrivetip()\"></div>')\ndocument.write('<img id=\"dhtmlpointer\" src=\"http://www.free-online-calculator-use.com/image-files/arrow2.gif\">')\nvar ie=document.all\nvar ns6=document.getElementById&&!document.all\nvar enabletip=false\nif(ie||ns6)\nvar tipobj=document.all?document.all[\"dhtmltooltip\"]:document.getElementById?document.getElementById(\"dhtmltooltip\"):\"\"\nvar pointerobj=document.all?document.all[\"dhtmlpointer\"]:document.getElementById?document.getElementById(\"dhtmlpointer\"):\"\"\nfunction ietruebody(){return(document.compatMode&&document.compatMode!=\"BackCompat\")?document.documentElement:document.body}\nfunction ddrivetip(thetext,thewidth,thecolor){if(ns6||ie){if(typeof thewidth!=\"undefined\")tipobj.style.width=thewidth+\"px\"\nif(typeof thecolor!=\"undefined\"&&thecolor!=\"\")tipobj.style.backgroundColor=thecolor\ntipobj.innerHTML=thetext\nenabletip=true\nreturn false}}\nfunction positiontip(e){if(enabletip){var nondefaultpos=false\nvar curX=(ns6)?e.pageX:event.clientX+ietruebody().scrollLeft;var curY=(ns6)?e.pageY:event.clientY+ietruebody().scrollTop;var winwidth=ie&&!window.opera?ietruebody().clientWidth:window.innerWidth-20\nvar winheight=ie&&!window.opera?ietruebody().clientHeight:window.innerHeight-20\nvar rightedge=ie&&!window.opera?winwidth-event.clientX-offsetfromcursorX:winwidth-e.clientX-offsetfromcursorX\nvar bottomedge=ie&&!window.opera?winheight-event.clientY-offsetfromcursorY:winheight-e.clientY-offsetfromcursorY\nvar leftedge=(offsetfromcursorX<0)?offsetfromcursorX*(-1):-1000\nif(rightedge<tipobj.offsetWidth){tipobj.style.left=curX-tipobj.offsetWidth+\"px\"\nnondefaultpos=true}\nelse if(curX<leftedge)\ntipobj.style.left=\"5px\"\nelse{tipobj.style.left=curX+offsetfromcursorX-offsetdivfrompointerX+\"px\"\npointerobj.style.left=curX+offsetfromcursorX+\"px\"}\nif(bottomedge<tipobj.offsetHeight){tipobj.style.top=curY-tipobj.offsetHeight-offsetfromcursorY+\"px\"\nnondefaultpos=true}\nelse{tipobj.style.top=curY+offsetfromcursorY+offsetdivfrompointerY+\"px\"\npointerobj.style.top=curY+offsetfromcursorY+\"px\"}\ntipobj.style.visibility=\"visible\"\nif(!nondefaultpos)\npointerobj.style.visibility=\"visible\"\nelse\npointerobj.style.visibility=\"hidden\"}}\nfunction hideddrivetip(){if(ns6||ie){enabletip=false\ntipobj.style.visibility=\"hidden\"\npointerobj.style.visibility=\"hidden\"\ntipobj.style.left=\"-1000px\"\ntipobj.style.backgroundColor=''\ntipobj.style.width=''}}\ndocument.onmousemove=positiontip\nfunction sn(num){num=num.toString();var len=num.length;var rnum=\"\";var test=\"\";var j=0;var b=num.substring(0,1);if(b==\"-\"){rnum=\"-\";}\nfor(i=0;i<=len;i++){b=num.substring(i,i+1);if(b==\"0\"||b==\"1\"||b==\"2\"||b==\"3\"||b==\"4\"||b==\"5\"||b==\"6\"||b==\"7\"||b==\"8\"||b==\"9\"||b==\".\"){rnum=rnum+\"\"+b;}}\nif(rnum==\"\"||rnum==\"-\"){rnum=0;}\nrnum=Number(rnum);return rnum;}\nfunction fns(num,places,comma,type,show){var sym_1=\"$\";var sym_2=\"\";var isNeg=0;if(num<0){num=num*-1;isNeg=1;}\nvar myDecFact=1;var myPlaces=0;var myZeros=\"\";while(myPlaces<places){myDecFact=myDecFact*10;myPlaces=Number(myPlaces)+Number(1);myZeros=myZeros+\"0\";}\nonum=Math.round(num*myDecFact)/myDecFact;integer=Math.floor(onum);if(Math.ceil(onum)==integer){decimal=myZeros;}else{decimal=Math.round((onum-integer)*myDecFact)}\ndecimal=decimal.toString();if(decimal.length<places){fillZeroes=places-decimal.length;for(z=0;z<fillZeroes;z++){decimal=\"0\"+decimal;}}\nif(places>0){decimal=\".\"+decimal;}\nif(comma==1){integer=integer.toString();var tmpnum=\"\";var tmpinteger=\"\";var y=0;for(x=integer.length;x>0;x--){tmpnum=tmpnum+integer.charAt(x-1);y=y+1;if(y==3&x>1){tmpnum=tmpnum+\",\";y=0;}}\nfor(x=tmpnum.length;x>0;x--){tmpinteger=tmpinteger+tmpnum.charAt(x-1);}\nfinNum=tmpinteger+\"\"+decimal;}else{finNum=integer+\"\"+decimal;}\nif(isNeg==1){if(type==1&&show==1){finNum=\"-\"+sym_1+\"\"+finNum+\"\"+sym_2;}else{finNum=\"-\"+finNum;}}else{if(show==1){if(type==1){finNum=sym_1+\"\"+finNum+\"\"+sym_2;}else\nif(type==2){finNum=finNum+\"%\";}}}\nreturn finNum;}\nfunction side_calc_b(num){var v_result=document.side_calc.result.value;if(v_result.length<10){var v_new_result=v_result+\"\"+num;document.side_calc.result.value=v_new_result;}}\nfunction side_calc_del(num){var v_result=document.side_calc.result.value;if(v_result.length>0){var v_new_result=v_result.substring(0,v_result.length-1);document.side_calc.result.value=v_new_result;}}\nfunction side_calc_sign(sgn){document.side_calc.h_sign.value=sgn;document.side_calc.h_num_1.value=document.side_calc.result.value;document.side_calc.result.value=\"\";var tape_sgn=\"\";if(sgn!=\"\"){if(sgn==\"/\"){tape_sgn=\"÷\";}else\nif(sgn==\"*\"){tape_sgn=\"×\";}else\nif(sgn==\"-\"){tape_sgn=\"-\";}else\nif(sgn==\"+\"){tape_sgn=\"+\";}}\nvar tape_new=document.getElementById(\"side_calc_tape_new\").innerHTML;var new_tape=\"\"+document.side_calc.h_num_1.value+\" \"+tape_sgn+\"\";document.getElementById(\"side_calc_tape_new\").innerHTML=new_tape;}\nfunction side_calc_equal(form){var v_1=Number(document.side_calc.h_num_1.value);var v_2=Number(document.side_calc.result.value);var v_sign=document.getElementById(\"h_sign\").value;var v_new_result=0;if(v_sign!=\"\"){if(v_sign==\"/\"){v_new_result=v_1/v_2;}else\nif(v_sign==\"*\"){v_new_result=v_1*v_2;}else\nif(v_sign==\"-\"){v_new_result=v_1-v_2;}else\nif(v_sign==\"+\"){v_new_result=v_1+v_2;}\nif(v_new_result>99999999.99||v_new_result<-99999999.99){alert(\"Sorry, the result is too big (greater than 1 billion) for this calculator.\");}else{document.side_calc.result.value=v_new_result;document.side_calc.h_num_1.value=v_new_result;document.side_calc.h_sign.value=\"\";var tape_new=document.getElementById(\"side_calc_tape_new\").innerHTML;var new_tape=\"\"+tape_new+\" \"+v_2+\" = \"+v_new_result+\"\";document.getElementById(\"side_calc_tape_new\").innerHTML=\"\";var tape_old=document.getElementById(\"side_calc_tape_old\").innerHTML;document.getElementById(\"side_calc_tape_old\").innerHTML=\"\"+new_tape+\"<hr style='border: dashed #EEEEEE 1px; line-height: 1;'>\"+tape_old+\"\";document.getElementById(\"side_calc_tape_but\").innerHTML=\"<input type='button' value='Throw Away' onClick='side_calc_clr_tape(this.form)' class='SideCalcClrTape' />\";}}}\nfunction side_calc_pm(form){var v_pm=Number(document.side_calc.result.value);v_pm=v_pm*-1;document.side_calc.result.value=v_pm;}\nfunction side_calc_clr(form){document.side_calc.result.value=\"\";document.side_calc.h_num_1.value=\"\";document.side_calc.h_sign.value=\"\";}\nfunction side_calc_clr_tape(form){document.getElementById(\"side_calc_tape_new\").innerHTML=\"\";document.getElementById(\"side_calc_tape_old\").innerHTML=\"\";document.getElementById(\"side_calc_tape_but\").innerHTML=\"\";}\nvar soc_ad_ar=[[0,\"\",\"\",\"\"],[1,\"Auto\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[2,\"Budget\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[3,\"Credit\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[4,\"Debt\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[5,\"Income\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[6,\"Invest\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[7,\"Loan\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[8,\"Mortgage\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[9,\"Finance\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[10,\"Retire\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[11,\"College\",\"WyzAnt\",\"Find a <a href='http://www.shareasale.com/r.cfm?b=246096&u=724440&m=28558&urllink=&afftrack=' rel='nofollow' target='_blank'>local tutor</a> today!\"],[12,\"Business\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[13,\"\",\"\",\"\"],[14,\"\",\"\",\"\"],[15,\"\",\"\",\"\"],[16,\"\",\"\",\"\"],[17,\"\",\"\",\"\"],[18,\"\",\"\",\"\"],[19,\"\",\"\",\"\"],[20,\"Date\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[21,\"Conversion\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[22,\"Math\",\"WyzAnt\",\"Find a local <a href='http://www.shareasale.com/r.cfm?b=246097&u=724440&m=28558&urllink=&afftrack=' rel='nofollow' target='_blank'>math tutor</a> today!\"],[23,\"Date\",\"SocialMedia\",\"If you like this calculator, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"],[24,\"Sports\",\"SocialMedia\",\"If you like this web app, please pay it forward with a <strong>Like</strong>, <strong>Tweet</strong>, <strong>+1</strong>, or <strong>Pin</strong>.\"]];";
</script>

<script>eval(mod_pagespeed_SxS9ChgsjW);</script>
<script>eval(mod_pagespeed_PJWHvBYF1j);</script>

</head>

<body>

<form name="calc" method="post" action="#">

<table class="CalcTable">
<tbody>

<tr>
<td colspan="3" align="center" class="CalcTitleCell">
CIRCLE CLACULATOR
</td>
</tr>
<tr>
<td colspan="3" class="CalcInstructCell">
<br/>
<br/>
<strong>Instructions:</strong> Enter one known circle measurement (area, circumference, diameter, or radius) and then click the "Calculate Circle Measurements" button to get the other three.
<p>
Note that when you type a known circle measurement into an input field, all other fields and results will be cleared of their existing results.
</p>
<p>
Mouse over the blue question marks for a further explanation of each entry field or button. More in-depth explanations can be found in the glossary of terms located beneath the Circle Calculator.
</p>
</td>
</tr>
<tr class="ChartRowOdd">
<td colspan="2" width="475" class="ChartTextCellLeft">
<img src="data:image/jpeg;base64,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" alt="Help" onMouseover="ddrivetip('Select how many decimal places you would like the result rounded to. Note that you can change the number of places before or after calculating the circle measurement. Also note that the circle calculator will always display the raw results (out to 14 places) in the steps that will appear beneath the calculator.', 250)" ; onMouseout="hideddrivetip()">
Number of decimal places to round result to:
</td>
<td width="125" class="ChartTextCell">
<select name="places" size="1" onChange="change_places(this.form)">
<option value="0">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
</select>
</td>
</tr>
<tr class="ChartRowEven">
<td width="350" class="ChartTextCellLeft">
<img src="data:image/jpeg;base64,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" alt="Help" onMouseover="ddrivetip('If you know the area of the circle and would like to calculate the circumference, diameter, and radius, enter the area on this line. Note that the area of a circle is expressed as the square of the particular unit of measurement being used (square mm, square inches, etc.).', 250)" ; onMouseout="hideddrivetip()">
Area (A), as in number of square units:
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="area" name="area" size="12" value="" class="CalcInFld" onKeyUp="clear_ins('area')"/>
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="area_out" name="area_out" size="15" value="" class="CalcOutFldEven"/>
</td>
</tr>
<tr class="ChartRowOdd">
<td width="350" class="ChartTextCellLeft">
<img src="data:image/jpeg;base64,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" alt="Help" onMouseover="ddrivetip('If you know the circumference of the circle and would like to calculate the area, diameter, and radius, enter the circumference on this line.', 250)" ; onMouseout="hideddrivetip()">
Circumference (C):
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="circ" name="circ" size="12" value="" class="CalcInFld" onKeyUp="clear_ins('circ')"/>
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="circ_out" name="circ_out" size="15" value="" class="CalcOutFldOdd"/>
</td>
</tr>
<tr class="ChartRowEven">
<td width="350" class="ChartTextCellLeft">
<img src="data:image/jpeg;base64,/9j/4AAQSkZJRgABAgAAZABkAAD/2wBDAAYEBAQFBAYFBQYJBgUGCQsIBgYICwwKCgsKCgwQDAwMDAwMEAwODxAPDgwTExQUExMcGxsbHB8fHx8fHx8fHx//2wBDAQcHBw0MDRgQEBgaFREVGh8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx//wAARCAAPAA8DAREAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAABQP/xAAkEAACAgEDBAIDAAAAAAAAAAABAgMFBAYRIQAHEjETIhUjYf/EABYBAQEBAAAAAAAAAAAAAAAAAAIDBf/EACARAQAABgIDAQAAAAAAAAAAAAEAAgMREkExURNhceH/2gAMAwEAAhEDEQA/AL5OrLB+4uo6+zvdSmBLLKhra6kyX+UkZLqEVXYqqog4AH862SkeOVCXjcZjO5os3OoYr/z+J3mXSA1ZcZ9ZNj5SMWzJWnjaSvlbY/Yx/NE+xU7cMAffU5sWjniD89wy5UxybfkDrp3VEHd+1salYcvMaysHxMbCtqyHM/Y8vlskrZDKRGW81aLcDf0eRTOVpA9Gm0DCbyKduyAtHaOu4LvId8iuLmutUAS1rZH85K3IQcJkM23k32b0o5OwBPVatUtvk09nqBTpt9cOzqP/2Q==" alt="Help" onMouseover="ddrivetip('If you know the diameter of the circle and would like to calculate the area, circumference, and radius, enter the diameter in the field on this line.', 250)" ; onMouseout="hideddrivetip()">
Diameter (D):
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="diam" name="diam" size="12" value="" class="CalcInFld" onKeyUp="clear_ins('diam')"/>
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="diam_out" name="diam_out" size="15" value="" class="CalcOutFldEven"/>
</td>
</tr>
<tr class="ChartRowOdd">
<td width="350" class="ChartTextCellLeft">
<img src="data:image/jpeg;base64,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" alt="Help" onMouseover="ddrivetip('If you know the radius of the circle and would like to calculate the area, circumference, and diameter, enter the radius in the field on this line.', 250)" ; onMouseout="hideddrivetip()">
Radius (r):
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="radi" name="radi" size="12" value="" class="CalcInFld" onKeyUp="clear_ins('radi')"/>
</td>
<td width="125" class="ChartTextCell">
<input type="text" id="radi_out" name="radi_out" size="15" value="" class="CalcOutFldOdd"/>
</td>
</tr>
<tr class="ChartRowEven">
<td colspan="3" class="ChartTextCell">
<img src="data:image/jpeg;base64,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" alt="Help" onMouseover="ddrivetip('Clicking this button will calculate the missing circle measurements and post the results to right-hand fields in the upper portion of the calculator, and then display the steps and formulas used in the area just below this button.', 250)" ; onMouseout="hideddrivetip()">
<input type="button" value="Calculate Circle Measurements" class="CalcButton" onClick="calc_circle(this.form)">
<input type="button" value="Reset" class="CalcButton" onClick="reset_calc(this.form)">
</td>
</tr>
<tr class="ChartRowOdd">
<td colspan="3" class="CalcSummaryCell" id="summary">
</td>
</tr>
</tbody>
</table>
</form>
</p>
</body>
</html>
========================================================================

Common Circle Measurements

========================================================================

Common Circle Measurements

Here is brief description of each of the four common circle measurements.

	Area All of the area within the boundary of the circle, expressed as a square of the unit of measurement (square mm, square feet, etc.). The area can be found by multiplying PI (3.14159) times the radius times the radius again.
	Circumference The distance around the outward boundary of a circle, expressed as a linear unit of measurement (millimeters, inches, etc.). The circumference can be found by multiplying PI (3.14159) times the diameter.
	Diameter The length of a straight line that intersects the center point of the circle and reaches to each side of the boundary. Diameter can be found by multiplying the radius by two, or by dividing the circumference by PI (3.14159).
	Radius The length of a straight line drawn from the circle boundary to the center point of the circle. The radius can be found by dividing the diameter by two, or by finding the square root of the quotient resulting from dividing the area by PI (3.14159).

Note that the formulas used for finding each measurement will be listed in the calculated results.
With that, let's use the Circle Calculator to find three missing measurements from one known measurement.