Yeah, as Warwick suggested, tell us what it says on page 153, for crying out loud. It is perfectly legal to post short excepts from books. Anyway, I'll tell you the truth about the GP and pi, which I doubt you will find on page 153. The GP shape is based on the pi fraction 311/99. Base=311x2 remens, height=99x4 remens. Anything else that you find about the GP and pi will be erroneous, because it will have been based on the erroneous assumption that the base is 440 cubits, which it obviously is not, neither is it exactly 280 cubits high, though only slightly over. Now whenever you encounter somebody with a theory based on a 440 cubit base and 280 cubit height simply ask them how many KC cubits fit into the base sides. It won't be 440, it will be somewhere around 439.82.