SOLUTION: A circular pool is 34 feet in diameter and has a flag stone walk around it that is 3 feet wide. Find the area of the walk. Express the answer in terms of pie

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Question 165515: A circular pool is 34 feet in diameter and has a flag stone walk around it that is 3 feet wide. Find the area of the walk. Express the answer in terms of pie
Answer by Mathtut(3670) About Me  (Show Source):
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Area for the circular pool is A=%28pi%29r%5E2 and r=34/2=17 so A=%28pi%2917%5E2 now the Area of the pool + the walk is A=%28pi%2918.5%5E2 because r in this case is (34+3)/2=18.5. now take the larger area which includes the pool +walk and subtract the pool area and that will leave the area of just the walk way. so %28pi%2918.5%5E2-%28pi%2917%5E2 which equals %28pi%29%2818.5%5E2-17%5E2%29 which equals %28pi%2953.25