What value of π did the Egyptians obtain 2000 years before Christ?

Answer 1

An Egyptian scribe named Ahmes wrote the oldest known text to imply an approximate value for π. The Rhind Mathematical Papyrus dates from the Egyptian Second Intermediate Period - though Ahmes stated that he copied a Middle Kingdom papyrus (i. e., from before 1650 BCE). In problem 48 the area of a circle was computed by approximating the circle by an octagon. The value of π is never mentioned or computed, however. If the Egyptians knew of π, then the corresponding approximation was 256/81 or 3.16