What is the true value of pie?

I have no clue why I want to know this, but does anybody know the equation used to find the true value of pie. (Pie being referred to as the number 3.141592654....)

Now, there has to be an equation used to find the non-ending number. Don't ask why I want to know, because I don't know why I do! As far as I know, the equation is like 21.99114858.../7 which still doesn't give me the real equation.

For all I know, there may be more than 1 equation that finds this value; but please, tell me all of them!

Thanks for the help guys!

Relevance
• 1 decade ago

Pi = {1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + 1/13 - 1/15 + 1/17 ...}

3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510

That's 50 decimal places. it's obviously not the true value, but closer than you'll likely use it. Engineering mathematics sometimes uses up to 100 digits. Supercomputer calculations have found over 1 trillion digits. It apparently keeps going forever, and mathemeticians haven't yet found a discernable pattern.

The formula for finding pi is very difficult. Read this website, to see what I'm talking about. Supposedly it requires more than 600 processes to calculate it to 3.14 and 1 billion processes to calculate it to ten decimal places: http://en.wikipedia.org/wiki/Pi

• 1 decade ago

To find the true value of pie you will need to plug it into another equation that you solve with pie and look at the relationship between the answer.

Come up with an equation and reverse it.

• ?
Lv 4
4 years ago

apple or rhubarb pie? Oh, you mean pi(Pi). That became invented (got here upon) by ability of Mr. Pie, he enjoyed the two apple and rhubarb, yet whilst he had to proportion some rhubarb pie, he purely have been given 3.14*** of it. So Mr. Pie shrink a pie into equivalent products and despite became left over he took. That way he constantly had some pie. He named the left-over, 'a bite for Pie', which became later shortened to Pi because of the fact they could no longer spell too solid.

• 1 decade ago

there is an excellent website here

http://www.escape.com/~paulg53/math/pi/index.html

which explains the history and gives several methods and equations for finding PI including those by;

Archimedes

Wallis

Gregory, Leibniz, and Machin

Newton

another great site here that shows how fibonacci numbers can be used

http://www.mcs.surrey.ac.uk/Personal/R.Knott/Fibon...

here are some more;

http://people.bath.ac.uk/ma3mju/calc.html

• 1 decade ago

The true value of pie is infinite. It is a never ending value and is merely an estimation of it's number. That's why it is so cool.

• 1 decade ago

it is equal to

4 * (1 - 1/3 + 1/5 - 1/7 + 1/9 - 1/11 + 1/13.....)

• Anonymous