Answer:
B. 216π cubic units
Explanation:
Given a cone with radius, r and a height, h:
[tex]\text{Volume}=\frac{1}{3}\pi r^2h[/tex]• The diameter is 18 units, therefore, the radius = 9 units.
,• Height, h= 8 units.
Substitute these into the formula:
[tex]\begin{gathered} V=\frac{1}{3}\times\pi\times9^2\times8 \\ =216\pi\text{ cubic units} \end{gathered}[/tex]The correct choice is B.
