Can anyone help me with this?

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.

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

Explain how you do each step what term makes it inconsistent y=2x - 4 ?