# How to Find the Area of ​​an Equilateral Triangle in JavaScript

08/01/2021

Contents

In this article, you will learn how to find the area of ​​an equilateral triangle in JavaScript.

## Finding the area of an equilateral triangle in JavaScript

An equilateral triangle is a triangle in which all three sides are equal in length. To find the area of an equilateral triangle in JavaScript, we can use the following formula:

``Area = (Math.sqrt(3) / 4) * Side^2``

where Side is the length of any side of the equilateral triangle, and Math.sqrt(3) is the square root of 3, which is approximately equal to 1.73205.

### Examples

#### Finding the area of an equilateral triangle with a side length of 5 units

``````const side = 5; // in units
const area = (Math.sqrt(3) / 4) * side ** 2;
console.log(area); // 10.825317547305483
``````

In this example, the side length is 5 units, and the output is the area of the equilateral triangle, which is approximately 10.83 square units.

#### Finding the area of an equilateral triangle with a side length of 10 units

``````const side = 10; // in units
const area = (Math.sqrt(3) / 4) * side ** 2;
console.log(area); // 43.30127018922193
``````

In this example, the side length is 10 units, and the output is the area of the equilateral triangle, which is approximately 43.30 square units.

#### Finding the area of an equilateral triangle with a side length of 3.7 units

``````const side = 3.7; // in units
const area = (Math.sqrt(3) / 4) * side ** 2;
console.log(area); // 6.238492080563358
``````

In this example, the side length is 3.7 units, and the output is the area of the equilateral triangle, which is approximately 6.24 square units.