# C program to Find the Area of an Equilateral Triangle

|In this C Programming example, we will implement the program to find the area of an equilateral triangle and print the output on the console.

Table of Contents

## 1. What is an equilateral triangle and how to find its Area?

A Triangle with all angles at 60 degrees and congruent sides or an equiangular triangle is described as Equilateral Triangle.

In an **equilateral** triangle, median, angle bisector, and altitude for all sides are all the same.

The **area** of an **equilateral** triangle is β3 a^{2}/ 4.

ExampleInput:side = 3Output:The Area of Equilateral Triangle is: 3.892500

Helpful topics to understand this program better are-

## 2. C Program to find the area of an equilateral triangle

Letβs discuss the execution(kind of pseudocode) for the program *to find the area of an equilateral triangle* in C.

- Initially, we prompt the user to enter the
**side**of the equilateral triangle. - The value is stored in the
`int side`

and the value of the area of the triangle is stored in the`float area`

. - Now, the side length is used for the calculation in the formula
`area = ( 1.73 * side * side) / 4`

. - After the calculations, the value is stored in the
`float area`

and use this variable to print the output.

Let us now implement the above execution of the program *to find the area of an equilateral triangle in C.*

#include <math.h> #include <stdio.h> int main() { int side; float area; printf("\nEnter the side of the triangle: "); scanf("%d", &side); area = (1.73 * side * side) / 4; printf("\nThe Area of an Equilateral Triangle is: %f", area); return (0); }

OutputEnter the side of the triangle: 6 The Area of an Equilateral Triangle is: 15.570000

## 3. Conclusion

In this C Programming example, we have discussed *how to find the area of an equilateral triangle*

*in C*.

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