Answer:
Volume is 339.12 cubic units
Step-by-step explanation:
[tex]{ \tt{volume = \pi {r}^{2} h}}[/tex]
» r is radius
» h is height
[tex]{ \tt{v = 3.14 \times ( {3)}^{2} \times (12)}} \\ { \tt{v = 3.14 \times 108}} \\ { \underline{ \tt{ \: \: v = 339.12 \: \: units {}^{3} } \: \: }}[/tex]