How many gallons of water in a 3 inch pipe by one foot long?

Answer 1

radius squared times pie times length = cubic inches
1.5 x 1.5 x 12 = 84.78 cubic inches
There is 231 cubic inches in a gallon, therefore 84.78 divided by 231 = .36 gallons

The improved answer is as follows: (the solution above omitted Pi (3.1416)), therefore

3.1416 x 1.5 x 1.5 x 12 = 84.82 (carrying Pi out to 4 places) divided by 231 = .367 gallons.

The answer was correct, but the solution as shown didn't show Pi as part of the equation

Answer 2

The piece of pipe is a cylinder.

Volume of a cylinder = (pi) x (radius)2 x (length)

Radius = 1/2 diameter = 0.75 inch

Length = 12 inches

231 cubic inches = 1 US gallon

Volume = (pi) x (0.75)2 x (12) = 21.20575 cubic inches = 0.0918 US gallon (rounded)

regardless of what material the pipe is made of.

Note:

That's the volume of the piece of pipe. It could hold that much water if you decide

to plug one end and fill it up. But I have no way to know what's actually in it.

Answer 3

Do the math:

Volume of a Cylinder: pi * height (in cm or in) * Radius Squared.

so, 3.14 * 24 (The radius of a 2" pipe is 1, and that squared is STILL 1)

The answer to that will give you CUBIC inches. 231 c.i = 1 Gallon.

Sorry that I am not giving you the answer, but you should REALLY learn this stuff, you'll use it after you finish school. I know the volume of a cylinder. I was asking what the in3 (in cubed) meant in 1 Gallon = 231 in3 So, i guess if I wanted 1 FOOT, then 1.632 / 10 would equal .1632 gallons.

Answer 4

Assuming the pipe is 1.25 inch inner diameter, its capacity is approx 63.75 US gallons. However, there is no way to tell how much water there is in the pipe.

Assuming the pipe is 1.25 inch inner diameter, its capacity is approx 63.75 US gallons. However, there is no way to tell how much water there is in the pipe.

Assuming the pipe is 1.25 inch inner diameter, its capacity is approx 63.75 US gallons. However, there is no way to tell how much water there is in the pipe.

Assuming the pipe is 1.25 inch inner diameter, its capacity is approx 63.75 US gallons. However, there is no way to tell how much water there is in the pipe.

Answer 5

.0637 gallons (capacity of pipe= 3.14159265 X radius squared X length)

Answer 6

1 1/4 copper pipe has a wall thickness between .040 of an inch and . 382 of an inch

inside diameter .1.295 of an inch to .896

volume=pye*(diameter/2) squared*length

Answer 7

That rather depends on the length of the copper pipe - which is not stated in the question.

Answer 8

There need not be any water in it!

The capacity of such a pipe is 0.65 US gallons.

Answer 9

Assuming the pipe is 1.25 inch inner diameter, its capacity is approx 63.75 US gallons. However, there is no way to tell how much water there is in the pipe.

Answer 10

1" ID copper pipe contains about 9.42 cu inch/ft. This is the equivalent of about 0.04 gal/ft