## LAGIRL69 2 years ago Whats does Pie Equal?

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1. sauravshakya

pie = circumference of a circle / diameter of the same circle

2. LAGIRL69

Thanks ^_^

3. sauravshakya

approximate value of pie is 3.14

4. sauravshakya

welcome

5. LAGIRL69

^_^

6. luvvikrant93

=22/7 or 3.14

7. ghazi

its pi, not pie, if you're talking about pie that is composed of cake, cream and whip cream and chocolate and a lot more , but pi = 3.14159 ..... @LAGIRL69

8. UnkleRhaukus

$\pi=4-\frac43+\frac45-\frac47+\frac49-\frac4{11}+\dots$

9. UnkleRhaukus

$\pi=\sqrt{8+\frac89+\frac8{25}+\frac8{36}+\frac8{49}+\frac8{64}\dots}$

10. hba

$\pi = -ilog(-1)$

11. UnkleRhaukus

$\pi=\frac{8\sqrt 2}{3}-\frac{24\sqrt2}{35}+\frac{40\sqrt2}{99}-\frac{56\sqrt2}{195}+\frac{72\sqrt2}{323}-\frac{88\sqrt2}{483}+\dots$

12. hba

$\frac{ 223 }{ 71 } < \pi < \frac{ 22 }{ 7 }$

13. hartnn

now this has gone wayyyyy too much beyond expectations......

14. sauravshakya

I would like to know how|dw:1356869570315:dw|

15. hartnn

u know that relation $$\huge e^{i\pi}=..... ?$$

16. sauravshakya

yes

17. hartnn

take natural log (ln) on both sides, and u get that.

18. sauravshakya

oh...

19. sauravshakya

|dw:1356869768485:dw|

20. hba

$e^{i \pi} =-1,(EULER \ IDENTITY)$

21. hartnn

1/i =-i

22. hartnn

because i^2=-1

23. sauravshakya

But log has base 10 right?

24. hartnn

log has base 10 but ln has base =e

25. sauravshakya

so it is ln

26. hartnn

absolutely... in calculus, by default, log means natural log ln

27. sauravshakya

got it now... thanx

28. hba

Buffon Needle --> http://mste.illinois.edu/reese/buffon/buffon.html $\pi \approx \frac{ 2nl }{ xt}$

29. hba

So, $\pi = 355/113 \ is \ the \ best \ approximation$

30. patdistheman

355/113 is most accurate.

31. zaynahf
32. hba

^ How many digits did you go till ?

33. zaynahf

No idea lol