Journeyman Plumber Practice Exam 2026 – The Complete All-in-One Guide to Exam Success!

To determine the gallon capacity of a rectangular container, you need to utilize the volume formula for a rectangular prism. The formula for calculating the volume in cubic feet is length multiplied by width multiplied by height (L x W x H).

Once you have the volume in cubic feet, the next step is to convert this volume to gallons, since the question specifically asks for gallon capacity. There are 7.48 gallons in one cubic foot. Therefore, to convert the cubic feet volume to gallons, you multiply the volume by 7.48.

In the context of this question, the correct calculation involves multiplying the three dimensions to get the volume in cubic feet and then applying the conversion factor of 7.48 gallons per cubic foot. Thus, the calculations can be represented as L x W x H x 7.5, with the factor of 7.5 being a rounded approximation of 7.48 for ease of calculation.

This method accurately reflects how to derive the gallon capacity from the dimensions of a rectangular container.