How many gallons in a 12x 18 pool?

The formula to calculate the approximate gallons of water in a rectangular swimming pool is:

Length (in feet) x Width (in feet) x Average Depth (in feet) x 7.5 = Gallons of water

In this case, the length is 12 feet, the width is 18 feet, and let's assume the average depth is 4 feet.

So, 12 x 18 x 4 x 7.5 = 4,320 gallons of water.

Therefore, there are approximately 4,320 gallons of water in a 12x 18 pool with an average depth of 4 feet.