Min knows that pi times radius equals 9.42 cm. What would she need to do to find the area?

[tex]\bf \textit{area of a circle}\\\\ A=\pi r^2\\\\ -------------------------------\\\\ \textit{now, we know that }\pi r=9.42\impliedby \textit{let's square both sides} \\\\\\ (\pi r)^2=(9.42)^2\implies (\pi ^2r^2)=9.42^2\implies \pi \pi r^2=9.42^2 \\\\\\ \stackrel{area}{\pi r^2}~~=~~\cfrac{9.42^2}{\pi }[/tex]