Packaging Problems

We are planning to pack up 8 tins of cocoa to mail in a big cardboard box.  We measured the dimensions, and made a layout for the 8 tins.  Next we determined the dimensions of the box.  We used a price of 0.01$ for each square inch of cardboard, then compared boxes based on their price.  Some arrangements are more pricey than others.
   

To help visualize the box dimensions, we used models, or drawings.  

To help visualize the net of the box, we used linking shapes.