If you made a sidewalk about 2.5' wide it would be about 13' long.
A cubic foot is 12" thick 12" wide and 12" deep. .45 cubic feet per 60# bag of concrete
A cubic yard is 46,656 cubic inches. Spread to a thicknes of 5 inches, a cubic yard of concrete covers 9332.1 square inches, which is 64.8 square feet.
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It depends upon how thick you want the concrete. For example, if you want the concrete to be 6 inches thick, then you will need 200 cubic feet. There are 27 cubic feet per cubic yard; so divide the 200 cubic feet by 27 to get 7.4 cubic yards.
If it is 4 inches deep/thick, 2 cubic yards. If it is 6 inches deep/thick, 3 cubic yards.
To calculate the volume of concrete in cubic yards for a slab that is 40 feet by 60 feet and 6 inches thick, first convert the dimensions to feet. The thickness in feet is 0.5 feet. The volume in cubic feet is 40 x 60 x 0.5 = 1200 cubic feet. Since there are 27 cubic feet in a cubic yard, divide 1200 by 27, resulting in approximately 44.44 cubic yards of concrete.
To calculate the amount of concrete needed for a slab that is 8 feet by 8 feet and 4 inches thick, first convert the thickness to feet: 4 inches is 1/3 of a foot. The volume in cubic feet is then calculated as 8 ft × 8 ft × (1/3 ft) = approximately 21.33 cubic feet. Since concrete is usually ordered in cubic yards, divide by 27 (the number of cubic feet in a cubic yard): 21.33 / 27 ≈ 0.79 cubic yards. Therefore, you need about 0.79 cubic yards of concrete for the slab.
To calculate the volume of concrete needed for a 12'x16' area that is 3 inches thick, first convert the thickness to feet: 3 inches is 0.25 feet. Then, multiply the area by the thickness: (12 \times 16 \times 0.25 = 48) cubic feet. Therefore, 48 cubic feet of concrete is required for the project.
how many cubic feet in a yard of concret
(3.5/12) x 120 = (.2917) x 120 = 35.004 Cubic Feet Concrete is sold by the cubic yard. 35.004 cubic feet = 1.3 cubic yards
12.5 cubic feet. Assuming you meant 4 INCHES thick..
To calculate the volume of concrete needed for a slab that is 12 feet by 20 feet and 4 inches thick, first convert the thickness to feet: 4 inches is equal to 1/3 foot. The volume in cubic feet is then calculated as follows: 12 ft × 20 ft × (1/3 ft) = 80 cubic feet. Therefore, you will need 80 cubic feet of concrete for the slab.