The first two questions are correct. In order to find the dimensions you have to count the boxes for the length, width, and height, and then divide by two giving you 3in x 2in x 2.5 in. Volume= length x width x height. When you multiply 3x2x2.5 you get 15 for the volume. The third is not correct because when you count the boxes and figure out the volume you get 120 as opposed to 30. The forth is not correct because when you count the boxes there is more than 96.