Question 1075088
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The area of the sidewalk is the difference of the areas of the larger circle and the smaller circle.


The smaller circle has the radius of {{{60/2}}} = 30 feet. Its area is {{{pi*r^2}}} = {{{3.14*30^2}}} square feet.


The larger circle has the radius of 30+5 = 35 feet. Its area is {{{pi*R^2}}} = {{{3.14*35^2}}} square feet.


Thus the area of the sidewalk is {{{3.14*(35^2-30^2)}}}.


Calculate it on your own.
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