Step-by-step explanation:
[tex]s = \pi \times {r}^{2} = \pi \times {6}^{2} = 36\pi[/tex]
[tex]h = 18 \times \sin(60) = 9 \sqrt{3} [/tex]
[tex]v = s \times h = 36\pi \times 9 \sqrt{3} = 324 \sqrt{3} \pi[/tex]
