400 ft2
320 square feet (16 x 20 = 320).
About 28.28 feet.
20*5 = 100 square feet.
There are 3 feet to a yard. So you get 20 feet by 15 feet gives you 300 square feet.
300
13 times 20 = 260 square feet
About 288.17 square feet.
well one container is 20feet long and the other container is 40 feet long. the difference is 20feet. 40ft-20ft = 20ft
its 10 feet-20feet
20 x 20 = 400 square feet.
There are 44.44 square yards in a room that is 20 feet x 20 feet (400 square feet). 20 feet x 20 feet = 400 square feet 400 square feet x 0.111111111 square yards/1 square foot = 44.44 square yards 1 square foot = 0.111111111 square yards
Do you mean a real square with the side length of 20 feet? Then 20 feet times 20 feet is 400 square feet.