C Program To Calculate The Area Of An Equilateral Triangle

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  • Last Updated :20 Nov, 2021
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C program to calculate the area of an equilateral triangle. There are you will learn how to find the area of an equilateral triangle in the C language.

Formula:

a = (sqrt(3) / 4) * (s * s)

Where:

a = area

s = side

Let us understand this example through the C program:

// C program to calculate the area of an equilateral triangle #include <stdio.h> #include <math.h> // Used for sqrt() function int main() { float s, a; // s = side // a = area printf("Enter the side of an equilateral triangle::\n"); scanf("%f", &s); // Calculate area of equilateral triangle a = (sqrt(3) / 4) * (s * s); // Output printf("\nArea of the equilateral triangle = %f sq. units", a); return 0; }

Run Program

Output:

Enter the side of an equilateral triangle::

7

Area of the equilateral triangle = 21.217623 sq. units

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