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What is the volume of a hole 9 foot deep by 3 feet in diameter?
Wiki User
∙ 14y ago
I'm assuming the hole is circular (since you used the word diamter). If not, the answer below is not correct, and you will need to provide more information on the shape of the hole. The formula for the volume of a cylinder is V = lπr2, where l is the length of the cylinder (or, in this case, the depth, 9 feet); π is "pi", the ratio of a circle's circumference to its diameter, or about 3.1416; and r is the radius of the cylinder, or half its diameter, or 1.5 feet. Substituting for the terms yields: V = 9 x 3.1416 x (1.5)2 = 9 x 3.1416 x 2.25 = (app) 63.6 cubic feet.
Wiki User
∙ 14y ago
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Diameter = 26 feet so Radius = 13 feet Then volume = π*r2*h where h = 4 inches = 1/3 feet So V = 176.98 cu feet (to 2 dp)
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Without depth, the circle is a flat figure without volume ... zero cubic units.
How many Cubic feet in 30 holes 5 inches deep and 10 in diameter?
V = volume of a cylinder = Pi*Diameter*depth 144 square inches = 1 square foot volume of each hole: Pi*10*5 ~= 157.1 square inches / 144 square inches/square foot = 1.091 square feet We have 30 such holes so total volume = 30*1.091 = 32.73 square feet.
How many cubic feet in 30 holes measuring 4 inches deep and 10 inches in diameter?
V = volume of a cylinder = Pi*Diameter*depth 144 square inches = 1 square foot volume of each hole: Pi*10*4 ~= 125.7 square inches / 144 square inches/square foot = 0.8727 square feet We have 30 such holes so total volume = 30*0.8727 = 26.18 square feet.
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