40 x 40 = 1600 square feet (can also be written as 1600ft2).
20 ft x 20 ft = 400 sq ft.
6 sq. yds
800 on each floor.
11' * 11' = 121 sq ft = 11.241 sq metres (to 3 dp)
960 square feet.
Multiply the two dimensions to get the area. In this case the calculation gives you 1,600 square feet.
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.
121 sq ft
20 ft x 20 ft = 400 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.
150
6 sq. yds
800 on each floor.