JavaScript CONSTANTS are easy 🚫

// const = a variable that can’t be changed

const PI = 3.14159;
let radius;
let circumference;

// PI = 420.69;

document.getElementById(“mySubmit”).onclick = function(){
radius = document.getElementById(“myText”).value;
radius = Number(radius);
circumference = 2 * PI * radius;
document.getElementById(“myH3”).textContent = circumference + “cm”;
}