The holes don't matter. Just pour water to fill the whole layer and forget about holes.
The small tetrahedons count as 1, the octahedrons count as 4.
If you pour water back and forth, you'll find this is correct.
We can use symbols and algebra, it's just that pouring a substance is also legit.
Like in cooking.
On Sun, Jul 14, 2013 at 8:31 AM, Robert Hansen <firstname.lastname@example.org> wrote:
> But are the holes in the final construction? > > Seems from the illustration, they are. > > But I didn't count all of the tetrahedrons. > > On Jul 14, 2013, at 12:34 AM, kirby urner <email@example.com> wrote: > > The holes help show the shape of these voids as one tetrahedron. > > They are counted as a part of the layer's volume. > > >