10 ft x 20 ft room = 200 square feet
240 square feet
162 square feet.
300 square feet.
There are 270 square feet in a 15'x18' room.
192 square feet.
200 square feet.
assuming those numbers are in feet: 10 ft * 20 ft = 200 sq. ft.
It's really just simple math. The area of a room is determined by multiplying the length by the width.
400 square feet.
240 square feet
252 square feet.
120 square feet.
300 square feet.
162 square feet.
525 square feet.
16' x 15' = 240 square feet.
A simple rectangular room 20 feet by 18 feet has 360 square feet.