In this post, we will learn how to find the area of an equilateral triangle using the C Programming language.
A triangle having all the sides equal and each angle equal to 60 degrees is called an equilateral triangle.
The formula to calculate the area of an equilateral triangle is: Area of Equilateral Triangle = (√3/4) * (side)2.
We will use this formula in our program to find the area of an equilateral triangle.
So, without further ado, let’s begin this tutorial.
C Program to Find Area of an Equilateral Triangle
// C Program to Find Area of an Equilateral Triangle
#include <stdio.h>
#include <math.h>
int main(){
float side, area;
// Asking for input
printf("Enter the side of an equilateral triangle: ");
scanf("%f", &side);
// Calculating area of equilateral triangle
area = (sqrt(3) / 4) * (side * side);
// Display result
printf("Area of the triangle = %.2f", area);
return 0;
}
Output
Enter the side of an equilateral triangle: 9
Area of the triangle = 35.07
How Does This Program Work?
float side, area;
In this program, we have declared two floating data type variables named side and area.
// Asking for input
printf("Enter the side of an equilateral triangle: ");
scanf("%f", &side);
Then, the user is asked to enter the side of the equilateral triangle. This gets stored in the side named variable.
// Calculating area of equilateral triangle
area = (sqrt(3) / 4) * (side * side);
We calculate the area of the equilateral triangle using the formula: area = (√3/4) * (side)2. Here, the sqrt() function is used to find the square root of a number. It is defined in the math.h header file.
// Display result
printf("Area of the triangle = %.2f", area);
Finally, the area of the equilateral triangle is displayed on the screen using the printf() function. We have used %.2f format specifier to limit the area to 2 decimal places.
Conclusion
I hope after going through this post, you understand how to find the area of an equilateral triangle using the C Programming language.
If you have any doubt regarding the program, then contact us in the comment section. We will be delighted to assist you.
Also Read: