I have a program I am coding, but I have a peoblem with the calculation below.
Oh the Application is for a Wallpaper App to calculate the number of single rolls
of wallpaper required to cover a room.
I attached a picture of the program
If the roll coverage is 45.5 sqrFt and the length, width and height of the room are 15, 18 and 20 respectively, the number of single roll will be 30