What is the most accurate method of the approximation of $\pi$
11391
Series that converge to $\pi$ quickly
75731
Significance of $\pi$ in physics
33806
find an approximate solution, up to the order of epsilon
133186
Understanding the "$\pi$" of a rotating disk
126576
Most efficient way to integrate $\int_0^\pi \sqrt{4\sin^2 x - 4\sin x + 1}\,dx$?
29759
Calculating pi manually
61794
Interesting and unexpected applications of $\pi$
105973
how do we know the BBP formula for $\pi$ is valid?
66872
Exact values of $\cos(2\pi/7)$ and $\sin(2\pi/7)$
45456
Do the digits of $\pi$ contain every possible finite-length digit sequence?
95145
Does $\exp(2ir\pi)$ equal $1$? What's wrong?
23727
How can I deduce $\cos\pi z=\prod_{n=0}^{\infty}(1-4z^2/(2n+1)^2)$?
47845
Mirror algorithm for computing $\pi$ and $e$ - does it hint on some connection between them?
102563
Precision of Coulomb's law
125523
How to find $\int_{0}^{\pi/2} \log ({1+\cos x}) dx$ using real-variable methods?
121071
Calculation of $\int^{\pi/2}_{0}\cos^{n}(x)\cos (nx)\,dx$, where $n\in \mathbb{N}$
65300
Why is $\pi$ irrational?