Find the volume of the triangular prism. Please explain your reasoning.

Given the figure of a triangular prism.
The volume of the triangular prism = Bh
Where B is the area of one triangle and (h) is the distance between the triangular bases
The area of one triangle B will be as follows:
[tex]B=\frac{1}{2}(12)(9)=54\text{ }ft^2[/tex]The value of h = 16 ft
So, the volume of the triangular prism =
[tex]V=54*16=864\text{ }ft^3[/tex]So, the answer will be:
The volume of the triangular prism = 864 ft³