Perhaps you missed this part "A cubit rod with 27 digits 20 1/4" in length, no palm divisions (Specimen #4: Turin Museum catalog #6349)." of which there are 448 in the casing base of G1 at 9072 inches. Many are different lengths and scales divided into different subdivisions. There are rods with 7 palm, 28 digit subdivisions (with provisions for extrapolating the cubit into 448 subdivisions)
Rhind papyrus Problem 50. A circular field has diameter 9 khet. What is its area.
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. Now it would seem something is missing unless we make use of modern data: The area of a circle of diameter d is (d/2)2 =d2/4. Now assume 64 = 92/4 = 81/4, then = 3 + 1/9 + 1/27 + 1/81 ~ 3.1605. But 3 + 1/9 + 1/27 + 1/81 is a number, presumably, intrinsically more pleasing to the Egyptians than 3 + 1/13 + 1/17 + 1/160.
I really don't expect you to comprehend and will continue to ramble, but the above is the extrapolation of pi by modern mathematicians and has nothing to do with Ancient Egyptians and least of all proves the Ancient Egyptians were cognizant of pi.
Now, unless you have proof the Ancient Egyptians were cognizant of pi, you may now continue crunching your numbers elsewhere. For the record, Having watched you hijack many different threads with your cheer leading for Thom, I don't believe Alexander Thom's assessment of ancient measures is correct and does not belong on this thread. From my perspective it seems you are just here hawking your book! Please go elsewhere.