Tantangan Rangkuman

import { Shape } from './shapes.js';
import { Circle } from './shapes.js';
import { Square } from './shapes.js';

// Kode pengujian, jangan ubah
const circle = new Circle(5);
const square = new Square(10);

console.log(circle.describe()); // Yang diharapkan: "This is a circle with radius 5"
console.log(square.describe()); // Yang diharapkan: "This is a square with side 10"