'Jim's calc of 354.6 gives a cubit of 20.25 / 25 = 81 the denominator of Egyptian 4/3 to the power 4 calculation Rind papyrus 50. ' Now David the third pyramid.
The third pyramid I gave as 356.4 imperial feet is that what you are thinking of?
The Royal cubit which I believe is 20.625 inches. The natural cubit 19.8 inches is found with 356.4 imperial feet or 4276.8 inches or 216 cubits of 19.8 inches.
The third pyramid base 4276.8 inches = 207.36 Royal cubits and so the third pyramid is not based on the Royal cubit but the standard 216 of 19.8 inches. Plus the foot is the driver here especially when it is cubed.
356.4 imperial feet cubed = 45,2720.270.14 x 2 = 90,540,540.29 cubic feet it is the volume of the Great Pyramid with a height of 432 Saxon feet (imperial feet 475.2 imperial feet) if you do the math this I think is a remarkable coincidence,.
356.4 x 3 = 1069.2 diagonal of base of pyramid .
base of pyramid = 756.0385704
volume of pyramid with base 756.0385704 and height 475.2 = 90,504,504.29. note third pyramid cubed x 2 = 90,540,540.29. Or if still a pyramid then the third pyramid base 356.4 height 213.84 imperial feet = 1/10th the volume of the Great Pyramid.
ps Jacob I am sticking with 25 digits 0.825 inches as the length of the Royal cubit but thanks for the feedback.
They have doubled the cube by changing it's shape from a cube base 356.4 to a pyramid..
In any case great fun thinking this through.
Edited 3 time(s). Last edit at 08-Feb-18 12:31 by molder.