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09-02-2018
Mathematics

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The inner circle of a donut has a radius of 1cm . The outer circle has a radius that is 3cm longer than the inner circle. what us the area of the donut

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kirstenknowles2 kirstenknowles2

09-02-2018

(π4²)-(π1²)
The area of the donut is 47.12388

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