Like you've already written it down, the formula of the volume of a cylinder is [tex]volume \: = \: base \: \times \: height[/tex]
Since the base of any cylinder is a circle, we can find the area of this circle with the formula [tex]a \: = \pi \: {r}^{2} [/tex] With r representing the radius.
Therefore, the volume of any cylinder can be found with the formula [tex]v \: = \pi \: {r}^{2} \: h[/tex] With h representing the height.
Filling in this formula gives us the following [tex]v \: = \pi \times {3}^{2} \times 8 = 226.08[/tex] Hence, the volume of this cylinder is about 226 in ^ 3.