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]. The two measure different things and basic dimensional analysis teaches that you cannot convert between measures with different dimensions such as these without additional information.
252 square feet = 28 square yards.
28' x 14' (392 square feet) = 43.5 square yards of carpet needed.
28 x 25 = 700 (700 square feet)
8.56 square feet.
To find the square feet of a room, you are just finding the area. Area is length times width. So, in a room with dimensions 28 by 28 feet, the square feet is 784.
784 square feet
3.11 square yards = 28 square feet.
19 feet by 28 feet gives you 532 square feet.
30 feet by 28 feet equals 840 square feet. 30 inches by 28 inches equals 840 square inches, or 5.833 square feet.
16' x 28' = 448 square feet.
16 feet x 28 feet equals 448 square feet.
224 square feet. (8 x 28 = 224)
28 x 46 = 1,288 square feet.
28 cubic feet (1.037 cubic yard, rounded)
28 ft * 10 ft = 28*10 = 280 square feet.
28 square meters equals 301.4 square feet.
13 feet times 28 feet = 364 square feet