Calculating the length of a side of a polygon Practice Test

The perimeter of a regular hexagon is one-half of a mile. Give the sidelength in inches.

A pentagon with a perimeter of one mile has three congruent sides; one of the other sides is 100 feet longer than any of those three congruent sides, and the remaining side is 100 feet longer than that fourth side. What is the length of that longest side?