Well, darling, 28 feet is a length, not an area, so it can't be converted directly to square feet. If you're talking about the area of a square that has a side length of 28 feet, then the answer would be 784 square feet. But if you're asking for something else, you might want to clarify, honey.
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.
16' x 28' = 448 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 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