Who decided the value of pi?
How did we get the value of pi?
How do we know our calculation of the value of pi is correct to as many digits as we've calculated it to? Is pi equal to 22/7? Why does the Pi sign (π) represent revenue/profit in Economics? Why is the value of pi interesting? What is pi (d^2) /4? Can the value of PI be learnt up to 210 decimal places? What's special about pi (π)? Is there a base where Pi is a rational number? How can we represent pi on the real number line by some geometric construction? What's 2 pi? What are the last known 30 digits of pi? What is PIL? What is a PIL? What was the maximum number of digits of pi or e used in an application in the physical world? Why did they do it? What are the last 30 known digits of pi? Why is [math]\pi[/math] what it is? Why is [math]\pi[/math] such a special number? Why doesn't Pi have a 0 in its first 30 digits? What's the value of [math]\int^{\pi}_{-\pi} (\sqrt{1 +x^2} ) dx[/math]? How do you use the PI function in Excel? Is Pi a "multiversal" constant? What's the value of [math]\int^{\pi}_{-\pi} \sqrt{1  +x^2} \, dx[/math]? How a2dp works for pi zero? How do pi and sigma bonds form? How do I explain pi to a five year old? Why is e raise to i *pi is -1? Why is pi so significant? If 22/7 is rational, why is pi irrational? In Microsoft Word, how do you insert the pi symbol? How do you count sigma and pi bonds?