Answer:
height = 3 cm
Step-by-step explanation:
Make the required substitutions and you have ...
[tex]h=\dfrac{v}{lw}\\\\h=\dfrac{120\,\text{cm}^3}{(8\,\text{cm})(5\,\text{cm})}=\dfrac{120}{40}\,\dfrac{\text{cm}^3}{\text{cm}^2}=3\,\text{cm}[/tex]
This finds the height of a prism with volume 120 cm³ and the other dimensions given. It is 3 cm.