To calculate the volume of a triangular prism you have to multiply the area of the triangular base by the length of the prism, following the formula:

The base of the triangle is b=5.4 cm, the height of the triangle is h=3.2 cm and the length of the prism is l=cm.
Replace the values in the formula:
![\begin{gathered} V=(1)/(2)\cdot5.4\cdot3.2\cdot6 \\ V=51.84\operatorname{cm}^3 \end{gathered}]()
The volume of the prism is 51.84 cm³