Question

How many soil will she need to fill the box completely

Answer 1

We have that the volume of a rectangular prism is given by the following expression:

`V=l\cdot w\cdot h`

Here l is the length, w the width, and h the height.

Now, we replace the values:

`V=(16)(12)(9)\Rightarrow V=1728`

So, she will need 1728 cubic inches of soil to fill the box completely.