A gardener is building a flower garden with a border of mulch around it. A model of the design is shown.

A large rectangle with dimensions of 12.2 feet by 18 feet. A smaller rectangle with dimensions of 6.5 feet by 9 feet inside of the larger one.

Part A: Find the area of the mulch border that surrounds the 6.5 ft by 9 ft flower garden. Show all work. (6 points)

Part B: If the mulch cost $4.70 per sq. ft., how much will the mulch for this project cost? Show all work.