Given a room with dimensions 12 feet by 10 feet and is 8 feet tall:
Calculate total wall space and total floor space
floor: 12*10
long walls: 2(12*8)
short walls: 2(10*8)
Now add 'em up.
Calculate total wall space and total floor space
long walls: 2(12*8)
short walls: 2(10*8)
Now add 'em up.