4 years ago

Write and simplify the exact expression for the area of the sidewalk.

1 answer:

3 0

Given area of small circle= πr^²= π×9×9= 81π

and area of greater circle= πr^²= π×11×11= 121π

now area of the sidewalk= area of greater circle (-) area of small circle= 121π-81π=40π

40×22/7=125.714m^²

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