Given:
Volume of the prism is 980 cubic inches.
Width is 7 in and height is 7 in.
Required:
To find the length of the prism.
Step-by-step explanation:
The volume of the right rectangular prism is given by,
![V=lwh](https://img.qammunity.org/2023/formulas/mathematics/high-school/75tmbnos9kuyj334ybmsvsgeropug62khi.png)
Therefore,
![\begin{gathered} 980=l*7*7 \\ \\ 980=49l \\ \\ l=(980)/(49) \\ \\ l=20in \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/illlj2b5cjas5u1pvllggbai9kkn13qmtu.png)
Final Answer:
Length is 20 inches.