JavaScript can help you figure the circumference of a circle when you enter the radius.
Full version: jsB@nk » Calculation » Math » Circumference Calculator
<SCRIPT LANGUAGE="JavaScript">
// Andrew Jones (andrew.jones@net.ntl.com)
<!-- Begin
function calculate() {
var radius=prompt("Please enter the size of the radius","");
var pi=3.14159265359; // estimated to 11 decimal places
var circ=2*pi*radius;
var d=alert("The circumference of a circle with radius "+radius+" is "+circ+".")
}
// End -->
</script>
<!--
This script downloaded from www.JavaScriptBank.com
Come to view and download over 2000+ free javascript at www.JavaScriptBank.com
-->
<input type=button value=" Calculate Circumference " onClick="calculate()">
<!--
This script downloaded from www.JavaScriptBank.com
Come to view and download over 2000+ free javascript at www.JavaScriptBank.com
-->