An 11x11x1 slab can divided into pieces that fit into a 5x5x5 cube. Show that the slab must be divided into at least 9 pieces.
Find a 9 piece division such that the volume of each piece is at least 8.
Here's a solution. It turned out not to be very hard to find.
The pieces are:
It was easy enough to fit them in the 5x5x5 that I don't feel the need to show them. The four 1x1x1 bits left over can make an L shape in the top layer.
Posted by Jer
on 2017-03-14 12:23:05