C Programs

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C Program: Surface Area of a Cube

Introduction

A cube is a 3D solid object with six equal square faces.
The surface area of a cube represents the total area of all six faces.

The formula is:

Surface Area=6a²

where

    a = length of one side of the cube

C Program: Surface Area of a Cube

#include <stdio.h>
 
int main() {
    float side, surface_area;
 
    // Input side length
    printf("Enter the side length of the cube: ");
    scanf("%f", &side);
 
    // Calculate surface area
    surface_area = 6 * side * side;
 
    // Display result
    printf("Surface Area of Cube = %.2f\n", surface_area);
 
    return 0;
}
 
 

 
OUTPUT 1 :
Enter the side length of the cube: 5
Surface Area of Cube = 150.00


OUTPUT 2 :
Enter the side length of the cube: 7.2
Surface Area of Cube = 311.04

Explanation

• User enters the side length of the cube.
• Formula applied: 6 × a².
• The program prints the surface area rounded to two decimal places.