The pipe would need to be 10 feet 10.8 inches long.
That section of pipe has a capacity of 0.918 gallon. (rounded)
We have no way of knowing how much water is in it.
For all we know, it may even be empty.
This pipe will hold 1,468.8 gallons of water.
12.5
Assuming this pipe is straight, it is a cylinder. The area of a cylinder is pi*r*r*depth. The depth is 25 feet. 25 feet is 300 inches. The diameter is 1/2 inch, making the radius 1/4 inch. pi*1/4*1/4*300 pi*1/16*300 pi*18.75 58.9048623 1 gallon is 231 cubic inches, so 58.9048623 / 231 0.254999404 gallons.
A bucket with a flat bottom that is 40' x 40' and that has one inch of water in it would have 40' x 40' x 1/12' cubic feet of water in it. That's 133 1/3 cubic feet of water. There are 7.48 gallons in a cubic foot, so there would be 997 1/3 gallons of water in this bucket. On the off chance the bucket was 40" x 40" instead of 40' x 40', the math machine cranks out an answer of 6.93 gallons of water.
Do you mean a fixed length of 5 inch pipe or are you asking to the amount of laminar flow through a 5 inch pipe? There is not enough info here to answer. Need length of pipe and what you are asking.
100 feet by 100 feet by one inch equates to 6,233.76 gallons of water.
100 feet of 3-inch pipe holds 36.73 gallons of water.
About 235 gallons of water.
12,239.9 gallons of water per 3,000 feet.
22.44 gallons for each inch of the water's depth.
5.5 gallons per 15 feet of 3-inch pipe.
14.7 gallons of water.
111 gallons of water.
A 72-inch pipe 16 feet long holds up to 3,384.1 US gallons of water.
It depends on the depth of the water. Assuming the water in one inch deep, there would be about 13,577 gallons of water in the half acre.
You would need 2,451 feet of 2-inch pipe for 400 gallons.
1.6 gallons of water.