What is the perimeter of the rectangle below?

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

It says factor each expression completely 8y+48

Answer pls man im trying to get out of summer school