How wide is a trench that measures 30 inches wide, expressed in feet?

To convert the measurement of a trench from inches to feet, you need to understand the relationship between inches and feet. There are 12 inches in one foot. Therefore, to convert inches to feet, you divide the number of inches by 12.

In this case, the trench measures 30 inches wide. By dividing 30 by 12, we get:

30 inches ÷ 12 inches/foot = 2.5 feet

This calculation shows that a trench measuring 30 inches is equivalent to 2.5 feet wide. This understanding of conversion between different units of measurement is crucial for determining the correct answer. Hence, the correct response is that a trench that measures 30 inches wide is 2.5 feet.