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Mathematics, 30.04.2021 20:10 lberries08

The fountain at the park has a walkway around it that is 1 foot wide. The fountain has a radius of 8 feet. The radius of the fountain and walkway together is 9
The area in terms of pi of the fountain and the walkway together is 81π ft2.
The approximate value for the area of just the walkway to the nearest whole number is 53

I need an explanation on how the walkway is 53
and no links

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The fountain at the park has a walkway around it that is 1 foot wide. The fountain has a radius of 8...
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