Question

Find the volume of the composite solid. Round your answer to the nearest tenth.

Answer 1

The "cylinder" has a diameter of 6, and therefore its radius is half that, or 3, thus

$\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\ -----\\ r=3\\ h=11 \end{cases}\implies V=\pi (3)^2(11)\implies V=99\pi$