feat: add geometry rectangle

Author: saahil-mahato

Geometry/Rectangle.js

@@ -0,0 +1,21 @@
+/**
+ * This class represents a rectangle and can calculate its perimeter and area
+ * https://en.wikipedia.org/wiki/Rectangle
+ * @constructor
+ * @param {number} length - The length of the rectangle.
+ * @param {number} breadth - The breadth of the rectangle.
+ */
+export default class Rectangle {
+  constructor(length, breadth) {
+    this.length = length
+    this.breadth = breadth
+  }
+
+  perimeter = () => {
+    return 2 * (this.length + this.breadth)
+  }
+
+  area = () => {
+    return this.length * this.breadth
+  }
+}

Geometry/Test/Rectangle.test.js

@@ -0,0 +1,11 @@
+import Rectangle from '../Rectangle'
+
+const rectangle = new Rectangle(3, 4)
+
+test('The perimeter of rectangle with length equal to 3 and breadth equal to 4', () => {
+  expect(parseFloat(rectangle.perimeter().toFixed(2))).toEqual(14.0)
+})
+
+test('The area of rectangle with length equal to 3 and breadth equal to 4', () => {
+  expect(parseFloat(rectangle.area().toFixed(2))).toEqual(12.0)
+})