You do NOT specify the units of '9' nor' '10' . However, assuming you mean 9 feet x 10 feet , the the area is to multiply these two numbder together.
Hence
9ft x 10 ft = 90 sq.ft.
Multiply the dimensions. 9x10 is 90 square feet.
240 square feet
300 square feet.
162 square feet.
There are 270 square feet in a 15'x18' room.
270 Square Feet.
9x10=90sf
To get the answer multiply length and width. The answer will come out to be 90 square feet.
400 square feet.
525 square feet.
120 square feet.
252 square feet.
324 square feet.
130 square feet.
352 square feet.
140 square feet.
770 square feet.
240 square feet