Answer:
18
Explanation:
The formula of a rectangular prism is l x w x h where b represents the length, w represents the width and h represents the height. In this case, you can replace each of these variables with the values given in your problem so it should appear as 2 x 2.25 x 4. Multiply all of these values, and you should get the volume.
Therefore, the volume of the prism is 18 inches cubed.
Hope that helped : )