Const


            const PI = 3.14159

            let radius

            let circumference

            

            radius = window.prompt("Enter the radius of a circle")

            radius = Number(radius)

            circumference = 2 * PI * radius

            

            console.log("The circunference is: ", circumference)

            Result (typing 4): 25.13272

CONST

A variable that can't be changed