Problem
\[ V=\pi r^{2} \frac{h}{3} \] Which of the following represents the formula that could be used to find the height of the cone? (A) \( h=\frac{\pi r^{2}}{3 V} \) (B) \( h=\frac{3 V}{\pi r^{2}} \) (C) \( h=\frac{3 \pi r^{2}}{V} \) (D) \( h=\frac{V}{3 \pi r^{2}} \)
Solution
Step 1 ：Multiply both sides of the equation by 3: \( 3V = \pi r^{2} h \)
Step 2 ：Divide both sides of the equation by \( \pi r^{2} \): \( h = \frac{3V}{\pi r^{2}} \)
