20 ft * 20 ft = 400 square feet
400!!
400
400 sq ft
400 sq ft. Just multiply 20 by 20 to get the answer.
20 x 20 = 400 square feet.
Do you mean a real square with the side length of 20 feet? Then 20 feet times 20 feet is 400 square feet.
400 square feet
971.80
2.78 square feet.
20 x 19 = 380 square feet.
12 x 20 = 240 square feet.