Question

B. Calculate the radius of Circle B if the circumference is 94.2 square centimeters.

Answer 1

`\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}`