$$791.28\ cm^{3}=\frac{1}{3}\pi\cdot8\ cm^{2}\cdot h$$
$\left\{\begin{matrix}\\c=0\text{, }&\text{unconditionally}\\c\in \mathrm{R}\text{, }&m=0\text{ or }m=\frac{100\pi h}{29673}\end{matrix}\right.$
$\left\{\begin{matrix}\\h=\frac{29673m}{100\pi }\text{, }&\text{unconditionally}\\h\in \mathrm{R}\text{, }&m=0\text{ or }c=0\end{matrix}\right.$
