[Codewars] Area of a Square (8 kyu) / JavaScript

https://www.codewars.com/kata/5748838ce2fab90b86001b1a

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DESCRIPTION:

Complete the function that calculates the area of the red square, when the length of the circular arc A is given as the input. Return the result rounded to two decimals.

Note: use the π value provided in your language (Math::PI, M_PI, math.pi, etc)

 

코드

function squareArea(A){
  return (A * 2 / Math.PI) ** 2;
}