both chambers: interior surface areas
589.824 = side wall diagonal: 24.28629243 lix , squared, Point Phive chamber.
Here, the floor area of the middle chamber divided by 73.728, then squared, equals the height of the upper chamber:
Point Phive chamber, floor area = width: 17.17300206, x length: 18.81208122 = 323.599095439
323.599095439 / 73.728 = 4.381780457139, squared = 19.1999999745
19.2 lix = Hi Phive chamber, wall height.
323.6 / 2 = 161.8
and here, the side wall area of the middle chamber, divided by 73.728, equals the wall height of the middle chamber
Side wall, area: Point Phive chamber
height: 15.36, x length: 18.81208122, = 288.9535675392
288.9535675392 / 73.728 = 15.359999992529
15.36 lix = Point Phive chamber, wall height.
Hi Phive and Point Phive chambers ........... half size .......... interior detail: the "brainelevator"