560 square feet. This is an easy calculation - just multiply the length by the width. The answer is the number of square feet.
560
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.
A 10x14 room has an area of 140 square feet (10 feet x 14 feet = 140 square feet).
There is 121 square feet in a 11'x11' room.