A circular pool has a circumference of 10pie m. If there is a sidewalk surrounding the pool that is 2 m wide, what is the perimeter of the outer edge of the sidewalk?
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Answer:
if circumference = 10π
2πr = 10 π
r = 5
if r = 5.then R = 5+2 = 7
therefore outer circumference = 2πR
= 14π
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