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Darina [25.2K]
4 years ago
12

The area of a circle is 113.04in^2. what is the radius of the circle

Mathematics
1 answer:
Alex4 years ago
5 0

\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\ \cline{1-1} A=113.04 \end{cases}\implies 113.04=\pi r^2\implies \cfrac{113.04}{\pi }=r^2 \\\\\\ \stackrel{using~\pi =3.14}{36}=r^2\implies \sqrt{36}=r\implies 6=r

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