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How many bricks would you need if the area of a patio is 396 square feet and one brick is 4'' x 8''?

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βˆ™ 2007-12-27 06:20:00

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If you lay out your bricks, 3 wide and 3 long, you'll get an area 12 inches x 24 inches. So every 9 brick, you'll cover 2 square feet. So 4.5 bricks per square feet X 396 square feet = 1782 bricks. Add a few for damage and waste, at least 1800 bricks for the patio you describe, maybe a few extra if the dimensions don't come out even. The bricks each cover an area of 32 square inches (4 x 8). The patio is 396 square feet. Since there are 144 square inches to the square foot, that means the patio is 396 x 144 = 57,024 square inches in area. Dividing that by 32 square inches per brick yields 1,782 bricks, exactly what was calculated above. First we shall convert 396 square feet into square inches.

12 inches equal to 1 foot.

So, 1 square foot equal to 144 square inches

Therefore, 396 square feet equals to 57024 square inches.

Area of the brick = Length * Width = 4 * 8 = 32 square inches.

Number of bricks required to cover 57024 square inches is 57024/32 = 1782.

So, you need 1782 bricks. Source: www.icoachmath.com

If you measured your area as 37 square metres and each brick was 10 cm by 20 cm then each brick is 0.1 * 0.2 square metres = 0.02 square metres. Number of bricks = 37/0.02 = 1850.

2007-12-27 06:20:00
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