# How many gallons of water would an 18 round by 42 inch swimming pool hold?

About 7300 gallons

### If 2.5 gallons of round-up concentrate makes 300 gallons how much would it take to make 125 gallons?

### How many gallons of water in a 80 inch round pool?

It depends on how deep the water is. Since it's a fairly small pool, let's say you fill it to 1 foot deep. In that case the total volume will be about 262 gallons of water. If you went to 1.5 feet the gallons would be about 392 gallons and if you filled the pool to 2 feet, the gallons would increase to about 523 gallons.

### How many gallons of water would there be in a pipe 36 inch by 55 foot?

If the pipe is round, with a 55-foot diameter, and 36 inches long, then its capacity is 53,317.3 gallons. If the pipe is round, with a 36-inch diameter, and 55 feet long, then its capacity is 2,908.2 gallons. Either way, we have no way of knowing how much water is in it. For all we know, it may even be empty.

### How many gallons of water would an 20' round by 48 deep swimming pool hold?

If the 20' is the diameter of the pool (radius 10 feet) and the depth is 48 inches (4 feet) the volume of the pool in cubic feet would be found by the formula pi x r2 x h - with pi as 3.14159, r2 as 100 and h as 4 ... which gives 1256.636 cubic feet 1 cubic foot of water = 7.4805195 US gallons (or 6.2288355 Imperial gallons), so 1256.636 cubic feet would…