SOLUTION: A circular park of 28m diameter has been constructed. A 3.5m circular track outside has been developed along the park. Using algebraic formulae, find the area of the track around t

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Question 1066394: A circular park of 28m diameter has been constructed. A 3.5m circular track outside has been developed along the park. Using algebraic formulae, find the area of the track around the park
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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A circular park of 28m diameter has been constructed.
The radius of the parK = 14 m
:
A 3.5m circular track outside has been developed along the park.
The overall radius, track and the park: 17.5 m
:
Using algebraic formulae, find the area of the track around the park
:
Track area (A) = overall area - park area
A = %28pi%2A17.5%5E2%29 - %28pi%2A14%5E2%29
A = pi%2A306.25%29 - %28pi%2A196%29
Factor out pi
A = pi%28306.25+-+196%29
A = pi%28110.25%29
A = 346.36 sq/m