What is the formula for calculating the volume of a rectangular pool in gallons?

The volume of a rectangular swimming pool can be calculated using the dimensions of the pool along with a conversion factor to transform cubic feet into gallons. The correct formula involves multiplying the length, width, and average depth of the pool to obtain the volume in cubic feet, and then applying the conversion factor for gallons.

In this case, multiplying the length, width, and average depth yields the volume in cubic feet. To convert this volume to gallons, it's important to know that one cubic foot is equivalent to approximately 7.48 gallons. Thus, incorporating this conversion factor into the calculation results in the formula: Length * Width * Average Depth * 7.48. This allows operators to accurately determine the pool's volume in gallons, which is essential for appropriate chemical balancing and maintenance.

The other options do not provide the correct method for calculating the volume in gallons. For instance, simply multiplying the dimensions without the conversion factor, or adding the dimensions, doesn't yield the actual volume. As such, option B represents the proper approach to obtaining the volume of a rectangular pool in gallons.