4' X 6= 24 square feet.
4' * 4' = 16 sq feet.
56 square feet.
4 square feet.
If that is 2' x 4' it would cover 800 square feet. If it is 2" x 4" it would cover about 5.5 square feet.
4' X 6= 24 square feet.
21 x 4 = 84 square feet.
144 square feet. (4 x 36 = 144)
If that's 32 x 4 feet, it's 128 square feet.
4' * 4' = 16 sq feet.
4 x 9 = 36 (square feet).
36 x 4 = 144 square feet.
21 x 4 = 84 square feet.
56 square feet.
36 square feet
32 square feet.
There are 135.67 square feet in 12' 4" x 11'