100 square feet.
There are: 5*5 = 25 square feet
24 feet x 10 feet = 240 square feet.
21 x 21 = 441 square feet
There are: 12*14 = 168 square feet
108 square feet
165 square feet
100 square feet.
360 square feet.
288 square feet.
144 square feet.
There are 66 square feet.
234 square feet.
There are 270 square feet in a 15'x18' room.
There is 121 square feet in a 11'x11' room.
60 square feet
A room measuring 20' x 20' = 400 square feet