The SH circumference confirmed by Thom and Mike Parjer Pearson using Pi as 22/6.
897.60 imperial feet.
This needs to be adjusted to accomodate eclipse prediction as a base 100 system.
897.60 / 99 x 100 = 906.6666r This is very close to the length of one side of the GP as 9068.8 inches allowing for the factor of 10.
9068.8-9066.666r = 2.1333r
2.1333r x 6 = 12.8 and as 128 this is 2 to the power 6 so a very definite relationship between the two numbers.