Answer :
The volume of a rectangular prism is given as:
[tex]V=lwh[/tex]Plugging the values we have and solving for h:
[tex]\begin{gathered} 1800=(12)(15)h \\ h=\frac{1800}{(12)(15)} \\ h=\frac{1800}{180} \\ h=10 \end{gathered}[/tex]therefore the height of the prism is 10 ft.