Baseline Widely available
The Math.PI static data property represents the ratio of the circumference of a circle to its diameter, approximately 3.14159.
function calculateCircumference(radius) {
return 2 * Math.PI * radius;
}
console.log(Math.PI);
// Expected output: 3.141592653589793
console.log(calculateCircumference(10));
// Expected output: 62.83185307179586
Because PI is a static property of Math, you always use it as Math.PI, rather than as a property of a Math object you created (Math is not a constructor).
The following function uses Math.PI to calculate the circumference of a circle with a passed radius.
function calculateCircumference(radius) {
return Math.PI * (radius + radius);
}
calculateCircumference(1); // 6.283185307179586
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