A movie theater used popcorn boxes in the shape of a right rectangular prism. Each box has a length of 9 inches, a width of 4 inches, and a height of 12 inches. What is the volume of popcorn the box can hold?
The volume of a rectangular prism is found by multiplying the length, width, and height. Multiplying the length (9 inches), width (4 inches), and height (12 inches) of the popcorn box gives 9 * 4 * 12 = <<9*4*12=432>>432 square inches. Answer: \boxed{432}.
