32 square feet. Multiply length by width - the result is the area in square feet.
To calculate the number of 80 lb bags of concrete needed for a 4ft by 4ft area at 5 inches thick, first determine the volume in cubic feet. The volume is 4ft x 4ft x (5/12)ft = 6.67 cubic feet. An 80 lb bag of concrete typically yields about 0.6 cubic feet, so you would need approximately 11 bags (6.67 ÷ 0.6 ≈ 11.11). Thus, you'll need 11 bags of concrete.
One or two probably, depending on how many square feet are included in each carton. Check the label for your answer - they are all different. Your room is 20 square feet, but you should include some extra for waste - about 10%. So you'll need enough to cover 22 square feet.
four ft. x four ft. = sixteen sq. ft. example: 4ft. x 4 ft. = 16 sq. ft.
Fourty cubic feet.
48 in Algebraic Steps / Dimensional Analysis4 ft*12 in 1 ft=48 in
48 square feet
2 square feet or 288 square inches.
The area is 9.2376 square feet.
You have to multiply the two dimensions to get the area. In this case the answer will be 60 square feet.
50*4 = 200 square feet.
It is: 61*4 = 244 square feet
45.51 square feet.
To do this just multiply together 2ft(*)2ft = 4ft^2 or four feet squared area=lenth times width
66 square feet
4ft*6ft = 24 ft2
There are 4 times 8 = 32 square feet
10 x 4 = 40 square feet