NEED HELP WITH THIS PLEASE!

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.

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost