Question

The area of a circle is modeled by the equation A = pir2. Rewrite the equation in terms of the circle's radius r. In yourfinal answer, include all of your calculations.

Answer 1

`\begin{gathered} A=\pi* r^2 \\ \text{divide both sides by }\pi \\ (A)/(\pi)=r^2 \\ \text{square root both sides} \\ \sqrt[]{(A)/(\pi)}=\sqrt[]{r^2} \\ r=\sqrt[]{(A)/(\pi)} \end{gathered}`