20 feet times 40 feet = 800 square feet
Area of deck = (20+2d)x(40+2d)-(20x40) Area of deck = (20x40)+40d+80d+4d2 -(20x40) Area of deck = 120d+4d2
960 square feet.
There are 324 square feet
87.75 square inches
1750
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To find the area of a rectangle, you multiply the length by the width. In this case, the length is 40 feet and the width is 20 feet. So, 40 feet x 20 feet = 800 square feet. Therefore, a 20x40 foot rectangle has an area of 800 square feet.
using epoxy paint to do a concrete floor need to know how much square feet it is how do i calculate the square footage?
Area of deck = (20+2d)x(40+2d)-(20x40) Area of deck = (20x40)+40d+80d+4d2 -(20x40) Area of deck = 120d+4d2
If the figures represent lengths measured in feet then, 20 x 40 = 800 sq feet
if you have a square acre how many ft. across is it
18-ft x 11-ft = 198 square ft
221 square feet
960 square feet.
There are 324 square feet
100-ft x 200-ft = 20,000 square feet
11 * 16 = 176 square feet