SOLUTION: A garden is in the shape of a circle with a diameter of 15 meters. A sidewalk 2 meters wide is to be built around the garden. Calculate the area of the sidewalk. Express your answe

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Question 332306: A garden is in the shape of a circle with a diameter of 15 meters. A sidewalk 2 meters wide is to be built around the garden. Calculate the area of the sidewalk. Express your answer in square meters accurate to two decimal places.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A garden is in the shape of a circle with a diameter of 15 meters.
A sidewalk 2 meters wide is to be built around the garden.
Calculate the area of the sidewalk.
Express your answer in square meters accurate to two decimal places.
:
15/2 = 7.5m, radius of the garden
then
7.5 + 2 = 9.5, is the overall radius (garden & walkway)
:
Overall area - garden area = sidewalk area
pi%2A9.5%5E2 - pi%2A7.5%5E2 = sidewalk area
283.53 - 176.71 = 106.82 sq/m is the sidewalk