A circular garden is bordered by a walkway. The radius of the garden is 6 feet, and the walkway is 2 1/2 feet wide. Rose wants to put a fence around the garden, between the garden and the walkway. How many feet of fencing will she need to buy? C= πd π= 22/7


A.) 6^2 π
B.) 6 π
C.) 8 1/2 π
D.) (8 1/2)^2 π
E.) None of the above