Surface are of a cube

$${\mathtt{2}}{\mathtt{\,\times\,}}\left({\mathtt{LW}}{\mathtt{\,\small\textbf+\,}}{\mathtt{WH}}{\mathtt{\,\small\textbf+\,}}{\mathtt{LH}}\right)$$

$${\mathtt{2}}{\mathtt{\,\times\,}}\left({\mathtt{12}}{\mathtt{\,\times\,}}{\mathtt{16}}{\mathtt{\,\small\textbf+\,}}{\mathtt{16}}{\mathtt{\,\times\,}}{\mathtt{22}}{\mathtt{\,\small\textbf+\,}}{\mathtt{12}}{\mathtt{\,\times\,}}{\mathtt{22}}\right) = {\mathtt{1\,616}}$$