7 facts about the great pyramid

Another submission from my Dad for today's submission day posting. Thanks Dad :D

1. Approximate weight of stone = 57 million tons
2. Approximate number of blocks = 23 million
3. Average block weight = 2.5 tons
4. Weight of largest block = 15 tons
5. Approximate dimension of base = 756 feet on a side
6. Area of base = 13.1 acres
7. Original height = 481.4 feet