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.
Assuming you mean the room is 15 feet by 9 feet - 135 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.
16' x 15' = 240 square feet.
A simple rectangular room 20 feet by 18 feet has 360 square feet.
240 square feet
525 square feet.
162 square feet.
300 square feet.
120 square feet.
252 square feet.