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algorithm class: pyramid #1254

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Oct 31, 2022
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25 changes: 25 additions & 0 deletions Geometry/Pyramid.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
/**
* This class represents a regular pyramid and can calculate its volume and surface area
* https://en.wikipedia.org/wiki/Pyramid_(geometry)
* @constructor
* @param {number} bsl - The side length of the base of the pyramid.
* @param {number} height - The height of the pyramid
*/
export default class Pyramid {
constructor (bsl, height) {
this.bsl = bsl
this.height = height
}

baseArea = () => {
return Math.pow(this.bsl, 2)
}

volume = () => {
return this.baseArea() * this.height / 3
}

surfaceArea = () => {
return this.baseArea() + this.bsl * 4 / 2 * Math.sqrt(Math.pow(this.bsl / 2, 2) + Math.pow(this.height, 2))
}
}
11 changes: 11 additions & 0 deletions Geometry/Test/Pyramid.test.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
import Pyramid from '../Pyramid'

const pyramid = new Pyramid(3, 5)

test('The Volume of a cone with base radius equal to 3 and height equal to 5', () => {
expect(parseFloat(pyramid.volume().toFixed(2))).toEqual(15)
})

test('The Surface Area of a cone with base radius equal to 3 and height equal to 5', () => {
expect(parseFloat(pyramid.surfaceArea().toFixed(2))).toEqual(40.32)
})