Pg 327 (339) - Q22
You've got a rectangular solid, and it has two faces like Figure 1 and four faces like Figure 2. Well, Figure 1 are going to be the N pieces to that rectangular solid, and the others are going to be the sides and tops. So you have a solid that has a volume that's going to be reflected by length x width x height, which would be 4 x 4 x 8; therefore, your answer would be 128.