Hope you are not joking. Just multiply 23 times 12 and that will be your answer.
240 square feet
300 square feet.
162 square feet.
There are 270 square feet in a 15'x18' room.
38 square feet !
400 square feet.
324 square feet.
525 square feet.
120 square feet.
252 square feet.
130 square feet.
140 square feet.
352 square feet.
770 square feet.
300 square feet.
162 square feet.
240 square feet