![h=11.5\operatorname{cm}]()
1) The Volume of that prism can be found by using this formula:

Note that the volume has been given to us already: 414 cm³, so to find out the height of that volume, we just need to calculate the area of the base.
2) Note that the base is a square, then we can write out for the base:

So now, let's plug into that both volume and Area to get the height of that prism.
![\begin{gathered} 414=36h \\ (414)/(36)=(36h)/(36) \\ (23)/(2)=h \\ h=11.5\operatorname{cm} \end{gathered}]()
3) Thus, the height of that prism is 11.5 cm.