Feet and square feet are two different ideas. Feet measure length, sq. feet measure area. A 'square foot' denotes an area equal to that of a square with sides equal to 1 foot in length. This area, though, need not be square-shaped. It just needs to have a total area that is the same as the above mentioned square.
1076.391042 sq. ft.
19681.81 sq ft
5220.5 sq ft
32 sq. ft.
1 sq yd are in 9 sq ft
3 sq yards = 3*9 sq ft = 27 sq ft
288 sq ft
1120 sq ft
5468 sq ft
55,000 sq ft.
3100 of them.
43055.64 sq. ft.