There is a square mat board one side 5cm as shown in the figure and is partitioned into grid square 25 .
I pile up cubes of one side 1cm on the square by the number written in the squares of each .
In each face of the cube, attach a red square seal of one side 1cm on a surface visible from the outside.
I pile up cubes of one side 1cm on the square by the number written in the squares of each .
In each face of the cube, attach a red square seal of one side 1cm on a 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 seal three seals attached .
Answer
(1) 147 sheets
(2) 15 pieces
(2) 15 pieces
Reference
