The formula for the volume of triangular prism is,
[tex]V=\frac{1}{2}\cdot b\cdot h\cdot l[/tex]
Here, 'b' is base of triangular face, 'h' is height of triangula face and 'l' is length between two triangular faces (Top and bottom).
Determine the volume of the triangular prism.
[tex]\begin{gathered} V=\frac{1}{2}\cdot12\cdot8\cdot9 \\ =432 \end{gathered}[/tex]
So answer is 432 inches cube.
