> I realise everyone has there favourite value for
> the RC and it is no secret mine is 20.625 inches.
Not to be contrary, but I recently learned some things and now have three favorite values for the cubit. Cubit #1 has a over all value of 1 having 7 palms 28 digits: Cubit #2 has a value of 1 having no palms and 27 digits: Cubit #3 has a value of 1 having 6 palms with 24 digits. The perimeter G1 is 1760 cubits the height is 280 cubits. The Kings Chamber length 20 cubits is 1/88 the perimeter, the Grand Gallery horizontal roof length is 1/22 the perimeter, the length of the Grand Gallery floor to the Great Step is 1/20 the perimeter.
> Height of pyramid 280RC 481.25 imp ft.
> hgt 481.25 x 22/7 = 756.25 for base of pyramid
> 440RC 20.625ins . And the seked is found.
All you have to do is prove they used pi in the form of 3 + 1/7. Given the 11/14 run rise of the 5 1/2 seked gives the same results.
The dimensions of Khufu’s pyramid given in royal cubits. The pyramid angle is 51° 50’ or 5½ palms per cubit rise. On the right is an aerial view of Khufu’s pyramid from the northwest showing the concavity which creates an eight-sided effect best seen here on the monument’s west face.
> hgt 481.25 x 3.1418181818 = 756 for base (many
> believe 756 true base of pyramid).
Fibonacci pi, 3.1418181818 = 864/275 = 3 + 1/10 + 1/25 + 1/550 which is if they had used it would be the way Ancient Egyptian would have noted this value.
756 x 1/2 = 378, 378 / (11/14) = 481 1/11
I believe the base of the pyramid is 440 cubits, height 280 cubits. Once the cubit is fully understood Petrie’s estimates become secondary.
> We all know there are 3 bases at least.
> Core base is interesting being certainly 9000 ins
> 750ft perimeter 36000 ins.
> Core hgt uncertain my guess 480 ft and x pi value
> Babylonian 3.125 = 750ft base. A check here can be
> obtained by working volume of core pyramid. base
> squared / 3 x hgt 480 volume = 90,000,000 cubic ft
> same number as base.
The Babylonian value of pi has the same ratio to (4 / (14/11)) as the casing to socket base numbers of 175/176 .
> I will add socket base.
> hgt 481.25 x Egyptian pi 3.16049383 = 760.493ft
> 9125.9ins socket
You might have something there, but I am not convinced the Ancient Egyptians used pi in the same manner we do. Now I could be wrong, but I don't believe there is a single problem involving circles and circular geometric calculation noted in the papyri where they did not use the (8/9 d)^2 formula from problem #50 Rhind Mathematical Papyrus. The written solution says, subtract 1/9 of of the diameter which leaves 8 khet. The area is 8 multiplied by 8, or 64 setat. The 256/81 you are calling Egyptian pi was extrapolated from (8/9 d)^2 using our concepts and reasoning not theirs.