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

float output()
{
    float l, w, h, surface_area;
    printf("Enter the length of the right rectangular prism:-\n");
    scanf("%f", &l);
    printf("Enter the width of the right rectangular prism:-\n");
    scanf("%f", &w);
    printf("Enter the height of the right rectangular prism:-\n");
    scanf("%f", &h);

    surface_area = 2*(w*l + l*h + h*w); 
    return surface_area;
}

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