circumference of a circle with a radius of 42.5 code example

Example 1: circumference of a circle with a radius of 23.56

const number = 23 //or any number you like
Math.floor(number * (2 * Math.PI)

Example 2: how to find circumference of a circle

curcomfrance = pi * radius * 2

Example 3: circumference of circle

C = Pi * r * 2 (r stands for radius)

Or you could do this:
C = Pi * d (d stands for diameter)