That surely sounds true! Think of a tiny dot of black ink that marks a particular location on your paper. Don't even bother to describe its size / dimension beyond "tiny."
I’m pretty sure the answer is 160 because the rectangle on the top has a volume of 64(16 x 4) and the rectangle on the bottom has a volume of 96(2 x 4 x 12). Add those together and you get 160 cubed inches. Hope this helped :)