[tex]v = \pi \times {r}^{2} \times h[/tex]
where r is radius and h is height.
diameter is 6 so the radius is 3. because 2 times the radius is called a diameter.
and the height is 9.
[tex]v = \pi \times {3}^{2} \times 9[/tex]
and the answer is 254.47 cm cubed