# Circular lawn

Around a circular lawn area is 2 m wide sidewalk. The outer edge of the sidewalk is curb whose width is 2 m. Curbstone and the inner side of the sidewalk together form a concentric circles. Calculate the area of the circular lawn and the result round to 10's m

^{2}.**Correct result:****Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):**

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