3.
[tex]v = \pi {r}^{2} h[/tex]
the volume equation for cylinder
[tex]v = \pi {6}^{2} (12) \\ v = \pi36(12) \\ v = 432\pi \\ v = 1357.16[/tex]
5. diameter =half of radius
[tex]v = \pi { 27.2}^{2} (15) \\ v = \pi295.24(15) \\ v = 4437.6\pi \\ v = 13941.13[/tex]
