Respuesta :

[tex]\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ \cline{1-1} C=94.2 \end{cases}\implies 94.2=2\pi r\implies \cfrac{94.2}{2\pi }=r\implies \stackrel{\pi =3.14}{15 = r}[/tex]

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