Write a C program to calculate area of an equilateral triangle.

 

#include <stdio.h> #include <math.h> int 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); return 0; }