Answer
$V\approx339\text{in}^3$
Work Step by Step
To find the volume of a cylinder, we simply use the formula $V=\pi r^2h$, where $r$ is the radius of the cylinder and $h$ is the height. We plug in the values for radius and height, as seen in the figure: $$V=\pi(3)^2(12)$$We simplify the exponent: $$V=(9)(12)\pi \\V\approx339\text{in}^3$$
