Solve the problem.Lu Yi walks his dog Sam with a leash of length 3 feet. Sam always walks directly to Lu Yi's right at the end of his leash. If Lu Yi walks once around a rectangle of length L and width W, how much further does Sam walk than Lu Yi? Give an exact answer.
A. 6? ft
B. (6? + 2L + 2W) ft
C. (3? + L + W) ft
D. 3? ft
Answer: A
Mathematics
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