How is the number Pi, derived?

  • Thread starter ruko
  • Start date
  • #1
57
1
How is the number 3.14159..........etc, derived? I know it has been calculated out to very great lengths and I'm wondering how it's done.
 

Answers and Replies

  • #3
1
0


Just find the proportion of radius to circumferance, I believe. I know it is some kind of proportion.
 
  • #4
182
0


My personal favourite:

[tex]\frac2\pi = \frac{\sqrt2}2 \cdot \frac{\sqrt{2+\sqrt2}}2 \cdot \frac{\sqrt{2+\sqrt{2+\sqrt2}}}2 \cdot \cdots\![/tex]

:smile:
 
  • #5
hotvette
Homework Helper
996
5


Modern calculation of pi no doubt use infinite series, first formulated in Newton's time (mid 1600's). Archimedes used circumscribed polygons w/ 96 sides to calculate pi with three digit accuracy.
 

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