# How do you find the volume of a prism if the width is x, height is #2x-1# and the length if #3x+4#?

##### 1 Answer

I'm assuming here that you mean a square prism:

For every prism, the volume is given by the formula:

where

In this case, the cross section is a rectangle. The area of a rectangle can be calculated by doing

So, the formula for these kind of prisms becomes:

where

Entering your values into the formula:

You can bring the

And now, you can use FOIL.

This is the volume.

I hope this is what you meant, and that it helped.