Answer:
The dimensions of a rectangular prism are 21 in. by 20 in. by 19 in.
To find:
The volume of the rectangular prism.
Solution:
Let the length, breadth and height are 21 in, 20 in and 19 in respectively.
Volume of the rectangular prism is
![V=Length* Breadth* Height](https://img.qammunity.org/2022/formulas/mathematics/college/8vdgot1dl3odbnptn46f6o6gw4b54tquu5.png)
![V=21* 20* 19](https://img.qammunity.org/2022/formulas/mathematics/college/j1hwn4q9crinpzjp9f2uojpyzfa39tdaq7.png)
![V=7980](https://img.qammunity.org/2022/formulas/mathematics/college/jgc79efq2yglvtv6wvyqpygq2qhmfb8y90.png)
Therefore, the volume of the rectangular prism is 7980 cubic inches.