Write simple C program to find the area of an equilateral triangle. input side of an equilateral triangle from user. How to find area of an equilateral triangle in C programming. C program to calculate area of an equilateral triangle if its side is given.
#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float side, area;
printf("Enter side of an equilateral triangle: ");
scanf("%f", &side);
area = (sqrt(3) / 4) * (side * side);
printf("Area of equilateral triangle = %.2f sq. units", area);
getch();
}