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Math.PI Property Flash 5; can be used when exporting Flash 4 movies
the ratio of a circle's circumference to its diameter, approximately 3.14159 
Math.PI

Description

The PI property represents the constant figs/U03C0.gif, the ratio of the circumference of a circle to its diameter.

Example

Math.PI is famously used in calculating the area of a circle: 

function circleArea (radius) {
  // PI times the radius squared can also be written
  // as Math.PI * Math.pow(radius, 2)
  return Math.PI * (radius * radius);
}

See Also

Math.cos( ), Math.sin( )

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