Answer:
The volume of the triangular prism (V) is

Explanation:
Given: The length of triangular prism
is 11 cm .
Since in the triangular cross-section we have the base (b) equals to 3 cm and the height (h) equals to 4 cm.
Using Volume of triangular prism formula: - A triangular prism whose length is l units, and whose triangular cross section has base b units and height h units,
then, Volume(V) of the triangular prism is given by;
cubic unit
Using the values of
,
and
we have,

On simplify we get;
cubic cm
⇒

Therefore, the volume of the triangular prism is 66 cubic cm