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

float op(float a)
{
    float sarea;
    sarea = 6 * a * a;
    printf("Surface area of sqaure is: %f", sarea);
}

float main()
{
    system("cls");
    float a;
    printf("Enter the side of the square:\n");
    scanf("%f", &a);
    op(a);
    return 0;
}
//.......Coded by YASH ALLAPURIA