This returns the ratio of the circumference of a circle to its diameter which is approximately 3.14159.
Syntax:
Math.PI
Example:
<html>
<head>
<title>JavaScript Math PI Property</title>
</head>
<body>
<script type="text/javascript">
var property_value = Math.PI
document.write("Property Value is : " + property_value);
</script>
</body>
</html>