SOLUTION: How many square meters Of brick pavement must be laid for a 4 meter wide walk around a circular flower bed 22 meter in diameter ?

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Question 1118476: How many square meters Of brick pavement must be laid for a 4 meter wide walk around a circular flower bed 22 meter in diameter ?

Answer by ikleyn(52802) About Me  (Show Source):
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The area between the two circular boundaries is


pi%2A%2811%2B4%29%5E2 - pi%2A11%5E2 = 326.26 square meters.


Here 11 = 22/2 is the radius of the circular flower bed.