Answer
$$ h=\frac{V}{\pi r^2 }.$$
Work Step by Step
To solve the given equation for $h$, we divide both sides by $\pi r^2 $ as follows
$$\frac{V}{\pi r^2 }=\frac{\pi r^2 h}{\pi r^2 }\Longrightarrow h=\frac{V}{\pi r^2 }.$$
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