40 x 40 = 1600 square feet (can also be written as 1600ft2).
40x40=1,600 sq. ft. 100 sq. ft. in a square. 16 square. Allow extra for the starter row and the cap unless you are going to use a ridge vent.
If you mean a 9 ft x 10 ft floor, then it is 90 ft2.
20 ft x 20 ft = 400 sq ft.
6 sq. yds
800 on each floor.
40x40=1,600 sq. ft. 100 sq. ft. in a square. 16 square. Allow extra for the starter row and the cap unless you are going to use a ridge vent.
If you mean a 9 ft x 10 ft floor, then it is 90 ft2.
67.5 sq ft
24*17 or 408 square feet.
Multiply width by length to get the area. The answer would be 360 square feet which is 40 square yards.
Multiply the two dimensions to get the area. In this case the calculation gives you 1,600 square feet.
121 sq ft
To calculate the area of a square or rectangle, multiply the length by the width. In this case, the garage floor is 20 ft. x 40 ft. = 800 sq. ft.
The White House has 55,000 sq. ft. of floor space.
20 ft x 20 ft = 400 sq ft.
150
6 sq. yds