Using proportions, it is found that the expression that can be used to find the number of inches in 6 feet is given by:
6 feet = 6 x 12 inches = 72 inches.
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
In this problem, the rule of three is given as follows:
1 foot - 12 inches.
6 feet - x inches.
Applying cross multiplication:
6 feet = 6 x 12 inches = 72 inches.
More can be learned about proportions at https://brainly.com/question/24372153
