13 x 20 = 260 square feet (13 and 20 must be in feet)
13*20 = 260 square feet 1 feet = 0.3048 meterstherefore 260 square feet = 260 * 0.3048 = 79.248 square meters
20 x 20 = 400 square feet.
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
2.78 square feet.
20 x 19 = 380 square feet.
12 x 20 = 240 square feet.
20 square meters are 215.278208 square feet.
20 square feet equates to 1.86 square meters.
20 (square meters) = 215.278208 square feet