diff --git a/maths/area_of_various_shapes.ts b/maths/area_of_various_shapes.ts
new file mode 100644
index 00000000..3680b8c4
--- /dev/null
+++ b/maths/area_of_various_shapes.ts
@@ -0,0 +1,123 @@
+/**
+ * @function areaOfSquare
+ * @description Calculate the area of a square.
+ * @param {number} side - The side of the square.
+ * @returns {number} - Area of the square.
+ * @throws {RangeError} - when side is 0 or negative.
+ * @see https://en.wikipedia.org/wiki/Square
+ * @example areaOfSquare(4) => 16
+ */
+export function areaOfSquare(side: number): number{
+ if(side<=0){
+ throw new RangeError('Side must be non-zero positive value');
+ }
+ return side*side;
+}
+
+/**
+ * @function areaOfRectangle
+ * @description Calculate the area of a rectangle.
+ * @param {number} length - The length of the rectangle.
+ * @param {number} width - The width of the rectangle.
+ * @returns {number} - Area of the rectangle.
+ * @throws {RangeError} - when length or width is 0 or negative.
+ * @see https://en.wikipedia.org/wiki/Rectangle
+ * @example areaOfRectangle(4, 5) => 20
+ */
+export function areaOfRectangle(length: number, width:number):number{
+ if(length<=0 || width<=0){
+ throw new RangeError('Length and width must be non-zero positive values');
+ }
+ return length*width;
+}
+
+/**
+ * @function areaOfCircle
+ * @description Calculate the area of a circle.
+ * @param {number} radius - The radius of the circle.
+ * @returns {number} - Area of the circle.
+ * @throws {RangeError} - when radius is 0 or negative.
+ * @see https://en.wikipedia.org/wiki/Circle
+ * @example areaOfCircle(7) => 153.93804002589985
+ */
+export function areaOfCircle(radius:number):number{
+ if(radius<=0){
+ throw new RangeError('Radius must be non-zero positive value');
+ }
+ return Math.PI*radius*radius;
+}
+
+/**
+ * @function areaOfTriangle
+ * @description Calculate the area of a triangle.
+ * @param {number} base - the base of the triangle.
+ * @param {number} height - the height of the triangle.
+ * @returns {number} - Area of the triangle.
+ * @throws {RangeError} - when base or height is 0 or negative.
+ * @see https://en.wikipedia.org/wiki/Triangle
+ * @example areaOfTriangle(4, 5) => 10
+ */
+export function areaOfTriangle(base: number, height:number): number{
+ if(base<=0 || height<=0){
+ throw new RangeError('Base and height must be non-zero positive values');
+ }
+
+ return 0.5*base*height;
+}
+
+/**
+ * @function areaOfTrapezoid
+ * @description Calculate the area of a trapezoid.
+ * @param {number} a - the length of the first base of the trapezoid.
+ * @param {number} b - the length of the second base of the trapezoid.
+ * @param {number} height - the height of the trapezoid.
+ * @returns {number} - Area of the trapezoid.
+ * @throws {RangeError} - when a, b or height is 0 or negative.
+ * @see https://en.wikipedia.org/wiki/Trapezoid
+ * @example areaOfTrapezoid(4, 5, 6) => 27
+ */
+
+export function areaOfTrapezoid(a: number, b:number, height:number):number{
+ if(a<=0 || b<=0 || height<=0){
+ throw new RangeError('Bases and height must be non-zero positive values');
+ }
+
+ return 0.5*(a+b)*height;
+}
+
+/**
+ * @function areaOfEclipse
+ * @description Calculate the area of an eclipse.
+ * @param {number} a - the length of the semi-major axis of the eclipse.
+ * @param {number} b - the length of the semi-minor axis of the eclipse.
+ * @returns {number} - Area of the eclipse.
+ * @throws {RangeError} - when a or b is 0 or negative.
+ * @see https://en.wikipedia.org/wiki/Ellipse
+ * @example areaOfEclipse(4, 5) => 62.83185307179586
+ */
+export function areaOfEclipse(a: number, b:number):number{
+ if(a<=0 || b<=0){
+ throw new RangeError('Semi-major and semi-minor axes must be non-zero positive values');
+ }
+
+ return Math.PI*a*b;
+}
+
+
+/**
+ * @function areaOfParallelogram
+ * @description Calculate the area of a parallelogram.
+ * @param {number} base - the base of the parallelogram.
+ * @param {number} height - the height of the parallelogram.
+ * @returns {number} - Area of the parallelogram.
+ * @throws {RangeError} - when base or height is 0 or negative.
+ * @see https://en.wikipedia.org/wiki/Parallelogram
+ * @example areaOfParallelogram(4, 5) => 20
+ */
+export function areaOfParallelogram(base: number, height:number): number{
+ if(base<=0 || height<=0){
+ throw new RangeError('Base and height must be non-zero positive values');
+ }
+
+ return base*height;
+}
\ No newline at end of file
diff --git a/maths/test/area_of_various_shapes.test.ts b/maths/test/area_of_various_shapes.test.ts
new file mode 100644
index 00000000..d8db2169
--- /dev/null
+++ b/maths/test/area_of_various_shapes.test.ts
@@ -0,0 +1,110 @@
+import {
+ areaOfSquare,
+ areaOfRectangle,
+ areaOfCircle,
+ areaOfTriangle,
+ areaOfTrapezoid,
+ areaOfEclipse,
+ areaOfParallelogram
+} from '../area_of_various_shapes'
+
+describe('area of square', () => {
+ test.each([
+ [4, 16],
+ [7, 49],
+ [10, 100]
+ ])(`areaOfSquare(%i) should return %d`, (side, expected) => {
+ expect(areaOfSquare(side)).toBe(expected)
+ })
+
+ test('should throw error on invalid input', () => {
+ expect(() => areaOfSquare(0)).toThrow(RangeError)
+ })
+})
+
+describe('area of rectangle', () => {
+ test.each([
+ [4, 5, 20],
+ [7, 10, 70],
+ [10, 15, 150]
+ ])(`areaOfRectangle(%d,%d) should return %d`, (length, width, expected) => {
+ expect(areaOfRectangle(length, width)).toBe(expected)
+ })
+
+ test('should throw error on invalid input', () => {
+ expect(() => areaOfRectangle(0, -1)).toThrow(RangeError)
+ })
+})
+
+describe('area of circle', () => {
+ test.each([
+ [7, Math.PI * 7 * 7],
+ [10, Math.PI * 10 * 10],
+ [15, Math.PI * 15 * 15]
+ ])(`areaOfCircle(%d) should return %d`, (radius, expected) => {
+ expect(areaOfCircle(radius)).toBe(expected)
+ })
+
+ test('Should throw error on invalid input', () => {
+ expect(() => areaOfCircle(-5)).toThrow(RangeError)
+ })
+})
+
+describe('area of triangle', () => {
+ test.each([
+ [4, 5, 10],
+ [7, 10, 35],
+ [10, 15, 75]
+ ])(`areaOfTriangle(%d,%d) should return %d`, (base, height, expected) => {
+ expect(areaOfTriangle(base, height)).toBe(expected)
+ })
+
+ test('Should throw error on invalid input', () => {
+ expect(() => areaOfTriangle(0, -1)).toThrow(RangeError)
+ })
+})
+
+describe('area of trapezoid', () => {
+ test.each([
+ [4, 5, 6, 27],
+ [5, 8, 4, 26],
+ [10, 20, 15, 225]
+ ])(
+ `areaOfTrapezoid(%d, %d, %d) should return %d`,
+ (a, b, height, expected) => {
+ expect(areaOfTrapezoid(a, b, height)).toBe(expected)
+ }
+ )
+
+ test('Should throw error on invalid input', () => {
+ expect(() => areaOfTrapezoid(2, 3, -5)).toThrow(RangeError)
+ })
+})
+
+describe('area of eclipse', () => {
+ test.each([
+ [4, 5, Math.PI * 4 * 5],
+ [7, 10, Math.PI * 7 * 10],
+ [10, 15, Math.PI * 10 * 15]
+ ])(`areaOfEclipse(%d, %d) should return %d`, (a, b, expected) => {
+ expect(areaOfEclipse(a, b)).toBe(expected)
+ })
+
+ test('Should throw error on invalid input', () => {
+ expect(() => areaOfEclipse(-5, 2)).toThrow(RangeError)
+ })
+})
+
+describe('area of parallelogram', () => {
+ test.each([
+ [4,5,20],
+ [7,10,70],
+ [10,15,150]
+ ])(`areaOfParallelogram(%d,%d) should return %d`, (base, height, expected) => {
+ expect(areaOfParallelogram(base, height)).toBe(expected)
+ })
+
+ test('Should throw error on invalid input', () => {
+ expect(() => areaOfParallelogram(0, -1)).toThrow(RangeError)
+ })
+})
\ No newline at end of file
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