There is a square mat board one side 5cm as shown in the figure and it is partitioned into grid square 25.
I pile up cubes of one side 1cm on the square by the number written in the each square.
In faces of the cube, attach a red square seal of one side 1cm on each surface visible from the outside.
I do not attach the seal on other surfaces (the surface in contact with the mat board or cubes , etc.).
(1) Find the number of seal attached.
(2) Find the number of cubes just three seals attached .