Arizona Plumbing Practice Exam 2026 – Complete Preparation Guide

To calculate the volume of a cylindrical pipe, the formula used is:

\[ V = \pi r^2 h \]

Where:

- \( V \) is the volume,

- \( r \) is the radius of the pipe,

- \( h \) is the height (or length) of the pipe.

In this case, the inside diameter of the pipe is given as 2 inches. First, you need to convert the diameter into the radius. The radius \( r \) is half of the diameter, so:

\[ r = \frac{2 \, \text{inches}}{2} = 1 \, \text{inch} \]

Next, convert the radius from inches to feet for consistency with the length measurement:

\[ r = \frac{1 \, \text{inch}}{12} \, \text{feet} = \frac{1}{12} \, \text{feet} \]

The length \( h \) of the pipe is already given in feet as 14 feet. Now, substitute the values into the volume formula:

\[ V = \pi \left(\frac{1}{12}\right)^2 (14) \]

First, calculate the area