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23-10-2017
Mathematics

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The area of a circle is 25 in. What is it’s radius?

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jdoe0001 jdoe0001

23-10-2017

[tex]\bf \textit{area of a circle}\\\\ A=\pi r^2~ \begin{cases} r=radius\\ -----\\ A=25 \end{cases}\implies 25=\pi r^2\implies \cfrac{25}{\pi }=r^2 \implies \sqrt{\cfrac{25}{\pi }}=r[/tex]

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