Anyone else think this is the worst possible test indication of understanding Let and Const and that the challenge here is understanding readLine()? Ha

function main() {

let r = readLine();
const PI = Math.PI;

// Print the area of the circle:
console.log(PI*r*r);
// Print the perimeter of the circle:
console.log(PI*2*r);

why is my code printing: 0

I'm curious as to why r**2 causes a runtime error

solution.js:29
    console.log(PI*(r**2));
                      ^
SyntaxError: Unexpected token *

Clean & correct

The challenge is called "Let and Const", but there's really no reason not to use const for both variables here. Let me know if you have any questions!

function main() {
    const PI = Math.PI;
    const r = parseFloat(readLine());

    console.log(PI * (r ** 2));
    console.log(2 * PI * r);

(From my HackerRank repo on GitHub.)

MY CODE let PI = Math.PI; let r =readLine();

// Print the area of the circle:
console.log(PI*r*r);
// Print the perimeter of the circle:
console.log( 2*PI*r);

MY OUTPUT 21.237166338267002 16.336281798666924 0

is it me or hackerrank

Typo in that error message about PI? Incorrectly, not correctly.

Hay People, I need help! I have already writed my code and its doesnt works correct, here:

    function main(area, perimeter) {
    readLine(radius);
        console.log()
    }

    function getArea(area, radius) {
            let area;
            area = 3.14 * (radius * radius);
            return area;
        }

    function getPerimeter(perimeter, radius) {
            let perimeter;
            perimeter = 2 * 3.14 * radius;
            return perimeter;
        }
    }

Can You explain my, who I made misstake.

I understand and am able to solve the problem yet I don't know how to answer it for hackerrank!!!

function main(r) {
// Write your code here. Read input using 'readLine()' and print output using 'console.log()'.
const PI = Math.PI;
let area = PI * Math.pow(r, 2);
let perimeter = PI * 2 * r;

console.log(area);
console.log(perimeter);

// Print the area of the circle:

// Print the perimeter of the circle:

try {    
    // Attempt to redefine the value of constant variable PI
    PI = 0;
    // Attempt to print the value of PI
    console.log(PI);
} catch(error) {
    console.error("You correctly declared 'PI' as a constant.");
}

}

Confused initially. Getting NaN. Guessed this is really a problem to learn the use of readLine.

function main() {
    const PI = Math.PI;
    let r = readLine();

    let area = PI * Math.pow(r, 2);
    let perimeter = 2 * PI * r;

    console.log(area);
    console.log(perimeter);