Answer: Option B, i.e., [tex]h=\dfrac{V}{\pi r^2}[/tex]
Option C, i.e., [tex]h=4\text{ cm}[/tex].
Step-by-step explanation:
It is given that formula for the volume V of a cylinder is
[tex]V=\pi r^2h[/tex]
We need to find the formula for h.
Divide both sides by [tex]\pi r^2[/tex].
[tex]\dfrac{V}{\pi r^2}=h[/tex]
[tex]h=\dfrac{V}{\pi r^2}[/tex]
Therefore, the required formula for height is [tex]h=\dfrac{V}{\pi r^2}[/tex]. Hence option B is correct.
If volume is 36π cm³ and base with a radius of 3 cm, then height of the cylinder is
[tex]h=\dfrac{36\pi}{\pi (3)^2}[/tex]
[tex]h=\dfrac{36}{9}[/tex]
[tex]h=4\text{ cm}[/tex]
Therefore, the height of a cylinder is 4 cm. Hence option C is correct.