Three balls with a diameter of 6.00 cm are dropped into a long rectangular box with a square cross section. The balls stack up one on top of the other and they just touch the sides of the box. The box is the right height so that the edge of the top ball is even with the top of the box. What percent of the box’s volume is empty? If water is poured into the box around the balls, how many ounces to the nearest 0.1 oz will it take to fill the empty space?