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you multiply 12 x 40 x .333 and then divide it by 27 which will give you 5.92 or 6 yards of concrete

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15y ago

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40 yards.


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How many yards of concrete do you need for slab that is 40'x40'x6?

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How many SY will 1 CY of concrete cover if sidewalk is 40 wide by 4 deep?

To calculate how many square yards (SY) of concrete one cubic yard (CY) will cover, first determine the volume of the sidewalk. The sidewalk dimensions are 40 feet wide and 4 inches deep. Converting these measurements, we find that 40 feet equals 13.33 yards, and 4 inches equals approximately 0.11 yards. The volume of the sidewalk is 13.33 yards * 0.11 yards = 1.47 cubic yards. Therefore, 1 cubic yard of concrete will cover approximately 0.68 square yards (1 CY / 1.47 CY).


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How many yards of concrete would it take to cover a 24 ft x 40 ft x 12 inches thick?

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How many yards of concrete do you need for a 40'x40' 4 inches thick?

To calculate the volume of concrete needed, first convert the dimensions to feet: 40 feet by 40 feet at a thickness of 4 inches (which is 1/3 of a foot). The volume in cubic feet is calculated as 40 ft x 40 ft x (1/3 ft) = 533.33 cubic feet. Since there are 27 cubic feet in a cubic yard, divide by 27 to convert to yards: 533.33 ÷ 27 ≈ 19.7 cubic yards. You would need approximately 19.7 yards of concrete.


How much would 40 cubic feet of concrete cost?

40 / 27 = 1.481 yards x $100 = $148.00 + tax. Unfortunately you will have a hard time getting a concrete company to deliver less than 5 yards.