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If the hole is 4 foot square 4' wide by 4' long by 20' deep, then I assume that you are after cubic yards. Multiply the width by the length by the depth and then divide by 27. This would give you the answer in cubic yards. 11.85 cubic yards.If the hole is round:Volume of a cylinder is Pi *R2 * H In this case: 3.14 X 22 X 20 = 251.2 cubic feet there are 27 cubic feet in a cubic yard (3x3X3=27) 251.2 cubic feet / 27 cubic feet per cubic yard = 9.3 cubic yards
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1 yard = 3 feet1 squared yard = 3 square feet
First you have to know how many cubic yards are in 10 tons, just ask the company your buying the material from, they know as they do this all year long. pea gravel, road base, and sand will all cover at a different rate because of the size of the material. one cubic yard of material is 3ft x3ft x3ft or 27 cubic feet If you spread 3 inches deep the one yard will cover , on average, 108 square feet surface area. At 2 inches deep one cubic yard will cover approx 162 square ft of surface aera. chet2010