#include <stdio.h>
#include <stdlib.h>
#include <math.h>

float output()
{
    float a, surface_area;
    printf("Enter the side of the square:-\n");
    scanf("%f", &a);

    surface_area = 6 * a * a;
    return surface_area;
}

float main()
{
    system("cls");
    float dis;
    dis = output();
    printf("Surface area of square is:- %f", dis);
    return 0;
}
//........Coded by YASH ALLAPURIA