Saturday, 3 October 2015

CIRCUMFERENCE CALCULATOR


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READ MORE:
http://www.wikihow.com/Calculate-the-Diameter-of-a-Circle
http://www.wikihow.com/Work-out-the-Circumference-of-a-Circ…
http://www.wikihow.com/Calculate-the-Volume-of-a-Cylinder
http://www.giangrandi.ch/soft/spiral/spiral.shtml
http://www.tpub.com/math1/19d.htm
http://www.nationalpiday.org/explore.html
https://youtu.be/3oAvFY8nRrM

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<html>
<head>
</head>
<script Language="Javascript">
function Calc(myform){
var enternumber1=document.myform.number1.value;
var enternumber1=parseFloat(enternumber1,10);
if(isNaN(enternumber1)||(
enternumber1<0)){alert(" Enter a valid number! ");
document.myform.number1.value="";
document.myform.number1.focus();}
else
document.myform.number3.value=2*enternumber1*Math.PI;}
</script>
<form name=myform><br>
<b>ENTER CIRCLE RADIUS VALUE :</b>
<input name="number1" type="text" size=" " maxlength="">
<br><br>
<input name="button" type="button" value="Calculate" onClick="Calc(myform)">
<input name="Reset" type="Reset">
<br><br>
<b>The result is :</b>
<input name="number3" type="text" size="" maxlength="" value="">
</form>
</body>
</html>


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ENTER CIRCLE RADIUS VALUE :



The result is :


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