11.979 square feet.
96 square inches.
51 inches wide x 30 inches long = 10.625 square feet.
8.25 square feet.
74.35 square feet
2 square feet.
675 square feet.
Square inches is a measure of area. This appears to be the area of a rectangle, in which case area = length x width. Area = 57in x 17in = 969in2.
13.5 square feet.
37.1527 square feet.
A square that's stretched, so it's still 6 inches high, but it's stretched to 10 inches wide.
The square footage of a rectangle with dimensions 233 inches by 144 inches is 223 ft2.