135
For 9 ft x 20 ft = 180 ft²
20 ft * 500 ft = 10000 square feet. Rather a large room!
20 x 20 what? feet? 400 sq ft.
Assuming the room is 15 ft by 10 ft (the question does not say so), the area would be 15*10 = 150 square feet.
225 square ft.
135
18 ft X 20 ft = 360 Square feet
For 9 ft x 20 ft = 180 ft²
20 ft * 500 ft = 10000 square feet. Rather a large room!
20 x 20 what? feet? 400 sq ft.
Assuming the room is 15 ft by 10 ft (the question does not say so), the area would be 15*10 = 150 square feet.
Assuming the room is 20 ft by 18 ft (the question does not say so), the area would be 20*18 = 360 square feet
165 feet squared
approx. 172.5 square feet
180 sq ft if 12 X 15 is actually 12 ft X 15 ft. Otherwise anything you like.
two hundred and forty 12 x 20 = 240