Final answer:
The circumference of the chest can be measured using a tape measure or estimated visually by comparing it to a reference point.
Step-by-step explanation:
The circumference of the chest can be measured using various methods. One option is to measure with a tape measure. The person conducting the measurement would wrap the tape measure around the chest, just below the armpits, and record the measurement in inches or centimeters. Another option is to estimate the circumference visually by comparing it to a known object or reference point. It is important to note that these methods provide an approximation and may not be as accurate as using a tape measure.