SOLUTION: A 3-ft.-wide sidewalk surrounds the outside of a rectangular plot that measures 20 ft. by 30 ft. Find the area of the sidewalk.

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Question 288371: A 3-ft.-wide sidewalk surrounds the outside of a rectangular plot that measures 20 ft. by 30 ft. Find the area of the sidewalk.
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(20+6)(30+6)-20*30
26*36-600
936-600=336 ft^2 is the area of the sidewalk.