This question cannot be answered sensibly. A square foot is a measure of area, with dimensions [L2]. A foot is a measure of distance, with dimensions [L]. Basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
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
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
400 square feet.
400 square feet
To convert 20 x 20 into square feet, you simply multiply the two dimensions together. So, 20 feet multiplied by 20 feet equals 400 square feet. Therefore, a 20 x 20 area measures 400 square feet.
6' x 20' = 120 square feet.
15 * 20 = 300 square feet.
As a square it has a width of 20 feet and a length of 20 feet.
2.78 square feet.
20 square meters is 215.3 square feet.