25ft * 15ft = 375 ft2
21*3 = 63 square feet.
(21.5) x (21.5) = 462.25 -- It has 462.25 square feet on the floor. -- It has another 462.25 square feet on the ceiling. -- It has (21.5 times the height of the room) square feet on each of the four walls.
Approximately 49.48 square feet.
15'x33' (495 square feet) = 55 square yards of floor.
75.083 square feet.
27 x 7 = 189 square feet.
528 square feet
18000
196 square feet. To calculate square feet simply multiply length by width - the result is the area in square feet.
A square yard is = to 9 square feet.
144 square feet.
400 square yards. This is because there are 9 square feet in a square yard, and there are 3600 square feet of carpet needed to cover the 60' x 60' floor.