In order to find the volume of the cabinet, use the volume formula for a rectangular prism, which is the shape of the cabinet.
lwh Formula for volume of a rectangular prism
24 x 72 x 18 Now, plug in each of the values you've been given.
31,104 Multiply the numbers; you might want to use paper and pencil, or a calculator, if you're allowed to.
The volume of the cabinet is 31,104 un³.
Hope this helps!
