What is the exact number of pi?

Answer 1

It is a never ending number. The link below shows the first 50,000 digits.

Answer 2

the exact number of pi can be found using this equation:

pi = 4 [1 - (1/3) + (1/5) - (1/7) + (1/9) - (1/11) + (1/13) - (1/15) + (1/17) - (1/19) + (1/21) - (1/23) + (1/25) - (1/27) + (1/29)..........]

Basically, the first value after 1 is 1/3, and the next number is merely [1 / (x + 2)], where x is the denominator of the previous number. Simply keep alternating between adding and subtracting. If you refer to each number in the brackets as an "Iteration", after about 50,000 iterations you're answer becomes very accurate. The more iterations you add the more accurate it will become.

If you know how to java program, then by all means go ahead and program this, which is actually why i called it an Iteration, because if you use an Iterations Method, you'll be set for the program.

Answer 3

Pi is exactly equal to 4*ArcTan[1].

ArcTan is a very well behaved real function defined by the following integral:

Integral[1/(t^2+1)]dt form 0 to x (for positive x)
since 1/(t^2+1) is an even function we can use the odd extension of the above function for negative values of x.

Answer 4

Pi is given as the ration of the circumference of a circle to the diameter,
pi = c / D

Pi is an irrational number, meaning that it cannot be represented with any finite decimal or fractional representation...it just goes on forever without any known patter.

100,000 digits of Pi,
http://www.geom.uiuc.edu/~huberty/math5337/groupe/digits.html

Answer 5

For the sake of usefulness people often need to approximate pi. For many purposes you can use 3.14159, which is really pretty good, but if you want a better approximation you can use a computer to get it. Here's pi to many more digits: 3.14159265358979323846.

Answer 6

Given any circle in a non-relativistic frame, it is the length of the circumference divided by the length of the diameter. It is irrational usually. If space was curved differently you could create a perfect integer pi. Dork.

Answer 7

3.14159. That is all i know. I just use a calculator. It had a pi symbol. Did u know that March 14 is Pi Day? It is. Get it. March is the 3rd month. 3.14. Yeah. Isnt that cool.

Answer 8

Pi is irrational and has an infinite number of digits. It's like the square root of two - also infinite number of digits

Answer 9

The ratio of the circumference of a circle to its radius. There is no other finite representation that will be exact, though there are several infinite series which can be finitely represented. Some of these can be seen here:

http://www.geom.uiuc.edu/~huberty/math5337/groupe/expresspi.html

Answer 10

Pi is irrational and non repeating, thus it is never exact.
Most sciences use pi as 3.14 or 22/7 (3.14285....)

Pi itself is 3.14159265358......thus you see 22/7 is not exact value for pi, nor is 3.14.

Answer 11

22/7