A movie theatre uses 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 right rectangular prism is found by multiplying the length, width, and height. In this case, the volume is 9 inches * 4 inches * 12 inches = <<9*4*12=432>>432 cubic inches. Answer: \boxed{432}.
