400 square feet.
4.0278 square feet.
20ft x 28ft = 560ft2
The area of rectangle is : 400.0
30' x 20' (600 square feet) = 66.6 square yards.
20 x 20 = 400 square feet.
800 square feet (40 x 20 = 800).
2.78 square feet.
20' x 60' = 1,200 square feet.
13 x 20 = 260 square feet (13 and 20 must be in feet)
20 x 19 = 380 square feet.
12 x 20 = 240 square feet.
13 x 20 = 260 square feet.
400 square feet.
400 square feet (20 x 20 = 400)
20' x 30' = 600 square feet.
20 x 3 = 60 square feet.