How many gallons of water in a 18x24x5 pool?

```

volume = length * width * height

```

In this case, the length is 18 feet, the width is 24 feet, and the height is 5 feet. So the volume of the pool is:

```

volume = 18 * 24 * 5 = 2,160 cubic feet

```

There are 7.48 gallons in 1 cubic foot, so the pool contains:

```

gallons = volume * 7.48 = 2,160 * 7.48 = 16,128 gallons

```

Therefore, the pool contains 16,128 gallons of water.