Ivan has a 20" x 20" x 20" gift box that needs to be placed carefully into a 2' x 2' x 2' shipping carton, surrounded by packing peanuts. Ivan uses 1 cubic foot bags of peanuts. He opens one bag and spreads them evenly on the bottom of the shipping carton. Then he centers the square base of the gift box on the peanut layer, pours in another bag of peanuts, and spreads them evenly. Now how deep are the peanuts?
