Find the volume of a rectangular prism that is 8 inches high, 12 inches long, and 5 inches wide.

A

360 in.³

B

480 in.³

C

420 in.³

D

240 in.³

Answer: B.

Length x width x height

Whenever you're finding the volume of a quadrilateral, you multiply the base x width x height of the shape. In this case, you have all three of those elements.

First I substituted those numbers into their spots in the expression (it doesn't matter which you multiply first, since multiplying is commutative).

8 x 12 x 5 = 480

Your answer is 480 square inches.