[tex]\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=4\\ h=10 \end{cases}\implies V=\pi (4)^2(10)\implies V=160\pi \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill V\approx 502.65~\hfill[/tex]
