#### Answer

$\pi=\dfrac{A}{r^2+r^2h}$

#### Work Step by Step

Using the properties of equality, in terms of $
\pi
,$ the given expression, $
A=\pi r^2+\pi r^2h
,$ is equivalent to
\begin{array}{l}\require{cancel}
A=\pi (r^2+r^2h)
\\\\
\dfrac{A}{r^2+r^2h}=\pi
\\\\
\pi=\dfrac{A}{r^2+r^2h}
.\end{array}