SOLUTION: A circular flower bed is 22 m in diameter and has a circular sidewalk around it that is 3 m wide. Find the area of the sidewalk in square meters. Use 3.14 for pi.

Algebra ->  Circles -> SOLUTION: A circular flower bed is 22 m in diameter and has a circular sidewalk around it that is 3 m wide. Find the area of the sidewalk in square meters. Use 3.14 for pi.      Log On


   

Question 1159478:
A circular flower bed is 22 m in diameter and has a circular sidewalk around it that is 3 m wide. Find the area of the sidewalk in square meters. Use 3.14 for pi.
Answer by ikleyn(52788) About Me  (Show Source):
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The smaller circle has the radius of  22/2 = 11 meters.


The larger circle has the radius 11 + 3 = 14 meters.


The area of the sidewalk is the difference of the areas of these two curcles


    pi%2A14%5E2 - pi%2A11%5E2.


You complete calculations, using this formula.