Rich is building a travel crate for his dog, Thomas, a beagle-mix who is about 30 inches long, 12 inches wide, and 24 inches tall. For Thomas to travel safely, his crate needs to be a rectangular prism that is about 12 inches greater than his length and width, and 6 inches greater than his height. What is the volume of the travel crate that Rich should build?

My answer:30,240 in please check this

Length: 30 + 12 = 42

Width: 12 + 12 = 24
Height: 24 + 6 = 30
Volume: 42 * 24 * 30 = ?