Q: How do you find the volume of a 5 ft deep hole and 5 ft in diameter?

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None but the volume of space taken can be calculated

cylinder 18 feet diameter x 1.5 feet deep volume = 381 cubic feet

In cubic inches it is: pi*4.5*4.5*24 = 486*pi or about 1527 rounded

if you mean a cylinder with a hole through it like a pipe or tube, then it's pi x (Od2 - id2)/4 x h Od = outer diameter id = inner diameter

none there is no dirt in a hole

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None but the volume of space taken can be calculated

cylinder 18 feet diameter x 1.5 feet deep volume = 381 cubic feet

There is no dirt in a hole that is 3 feet deep and six inches in diameter.

none. it is a hole afterall!

In cubic inches it is: pi*4.5*4.5*24 = 486*pi or about 1527 rounded

if you mean a cylinder with a hole through it like a pipe or tube, then it's pi x (Od2 - id2)/4 x h Od = outer diameter id = inner diameter

none there is no dirt in a hole

None. There is nothing in a hole.

there is no dirt in a hole that has been dug. there is just a hole.... But assuming you mean how much dirt was in the hole: I am assuming that the whole is circular and the width is the diameter of the whole. To find the cubic feet of dirt in a hole you need to find the volume. The formula for volume of a cylinder (a 3-D shape with circles at two ends aka a can) is: V = PI * r^2 * h V = volume PI = the constant PI which is about equal to 3.14 r = the radius of the hole or 1/2 the diameter h = the height of the cylinder, or depth of the hole in this case Plugging in your numbers and solving for V V = 3.14 * (7/2) ^2 * 3 V = 115.395 cubic feet

As it is a hole there is no dirt in it. However, a cylinder of dirt with radius 1.5ft, depth 5ft and a volume of πr2h ~= 35.34 cu ft has been removed.

The area of a hole 4 feet in diameter and 19 feet deep is: 76 square feet. (4 x 19 = 76).

volume of a clylinder= pi(r^2)h plug in values= pi(.5^2)(5) equals about 3.92 cubic feet