You will find among Egyptology Petrie's figures are the accepted value for G3. G3 doesn't relate to pi but to a 5 3/5 seked having a rise of 5 to a run of 4 palms is also the accepted value for the angle cotan 4/5 or tan 5/4 = 51º 20' 24.69". Actually any and all angles will tell you nothing regarding the intent of the Ancient Egyptians. Finding what made sense to the Ancient Egyptians and what was intended can only be accomplished by the use of their system components of unit fractions, seked and cubits and their binary system of multiplication also known as the Eye of Horace based on the powers of two: (1/2, 1/4, 1/8, 1/16, 1/32, 1/64) equaling 63/64. But to each his own. Good luck on your quest.