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If you drill a hole twenty five feet deep and 8 inches in diameter how much concrete will it take to fill it in?
25 feet is equal to 300 inches. The radius of a hole is half its diameter, which equals 4 inches. The volume of the cylinder is given by the formula v = [Pi]r2h, so the volume of your hole is 3.14 * 16 * 300 = 15080 cubic inches. There are 1728 cubic inches to the cubic foot, so you'll need about 8.75 cubic feet of concrete, which is about a third of a yard. (More exactly, that's a cubic yard, but concrete guys just say "yard.")
How much water does a 6 hose hold per ft?
A hose with diameter of 6 inches has cross-sectional area of [pi*r2] = pi*(3 in)21 foot = 12 inches, so (12 in)*pi*(3 in)2 = 339.292 cubic inches per linear foot of hose.Since 1 gallon = 231 cubic inches, 339.292 cubic inches = 1.46880 gallons
How much dirt to fill a round hole 18 feet in diameter and 18 inches deep?
cylinder 18 feet diameter x 1.5 feet deep volume = 381 cubic feet
How much cubic feet is 15 cubic inch?
15 cubic inches = 0.00868 cubic feet.
How do you calculate how much water it will take to fill a pool that is 27 feet diameter by 4 feet deep?
Surface area = area of the 27-ft diameter circle = pi R2 = pi (13.5)2 Volume = 4 x pi x (13.5)2 times (1,728 cubic inches per cubic foot) / (231 cubic inches per gallon) = 17,132 gallons (rounded) Also, 2290 cubic feet (rounded), or 84.8 cubic yards (rounded).
