\[\boxed{\ \mathbf{796}\mathbf{\ (620)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[a = 6\ см.\]
\[V = a^{3} = 6^{3} = 6 \cdot 6 \cdot 6 =\]
\[= 36 \cdot 6 = 216\ см^{3}.\]
\[Ответ:216\ см^{3}.\]