Unknown macro: {latex}
\large
$$
Vol_
Unknown macro: {TubeSettlers}
= \pi *\left( {{\raise0.7ex\hbox{$D$} !\mathord{\left/
{\vphantom {D 2}}\right.\kern-\nulldelimiterspace}
!\lower0.7ex\hbox{$2$}}} \right)^2 *L
$$