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An earth was felt throughout a circular area of 1,808.64 square miles. What was the radius of the circular area

Respuesta :

[tex] \bf \textit{area of a circle}\\\\
A=\pi r^2~~
\begin{cases}
r=radius\\
------\\
A=1808.64
\end{cases}\implies 1808.64=\pi r^2
\\\\\\
\cfrac{1808.64}{\pi }=r^2\implies \sqrt{\cfrac{1808.64}{\pi }}=r [/tex]

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