When all sides are known
When all sides(s1, s2, s3) are known then we could use:
Formula to find the Area of the Triangle:
let s = (side1 + side2 + side3) / 2;
let area = Math.sqrt(s * ((s - side1) * (s - side2) * (s - side3)));
Example: This example shows the area of triangle using JavaScript.
function triangleArea(side1, side2, side3) {
// Calculate the semi-perimeter
let s = (side1 + side2 + side3) / 2;
// Use Heron's Formula to find the area
return Math.sqrt(s * (s - side1) * (s - side2) * (s - side3));
}
// Example usage
let side1Length = 3;
let side2Length = 4;
let side3Length = 5;
let area = triangleArea(side1Length, side2Length, side3Length);
console.log(`The area of the triangle is: ${area}`);
Output
The area of the triangle is: 6
How to find the area of a triangle using JavaScript ?
We are using JavaScript to solve a simple geometry problem: finding the area of a triangle. In this article, we’ll show you different ways to do it. Whether you’re new to coding or want to understand JavaScript better, follow along as we figure out how to find the area of a triangle
Below are the approaches:
Table of Content
- When height is known
- When all sides are known
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