query: Why is the ratio of circumference to diameter $\pi$, and not any other number?
positive_passages.docid: 83290
positive_passages.text: How is the value of $\pi$ ( Pi ) actually calculated?
negative_passages.docid: 78114
negative_passages.text: Why is the radius of curvature = 1/(curvature)?
negative_passages.docid: 133186
negative_passages.text: Understanding the "$\pi$" of a rotating disk
negative_passages.docid: 132928
negative_passages.text: Digits of $\pi$ forming primes?
negative_passages.docid: 130686
negative_passages.text: How is $3\pi-10$ element of $[-\pi/2,\pi/2]$?
negative_passages.docid: 157066
negative_passages.text: Do We Need the Digits of $\pi$?
negative_passages.docid: 107371
negative_passages.text: Why round to even integers?
negative_passages.docid: 96584
negative_passages.text: Why isn't the volume formula for a cone $\pi r^2h$?
negative_passages.docid: 2786
negative_passages.text: The staircase paradox, or why $\pi\ne4$
negative_passages.docid: 155740
negative_passages.text: Newton's Law of Graviation: Why $G$ and not e.g. $\dfrac{1}{4\pi G_0}$?
negative_passages.docid: 13688
negative_passages.text: Why are these numbers not equal?
negative_passages.docid: 17620
negative_passages.text: Why the principal value of complex number argument is taken within $(-\pi,\pi]?$
negative_passages.docid: 23705
negative_passages.text: Does $\pi$ contain all possible number combinations?
negative_passages.docid: 61794
negative_passages.text: Interesting and unexpected applications of $\pi$
negative_passages.docid: 41191
negative_passages.text: How to prove this $\pi$ formula?
negative_passages.docid: 18811
negative_passages.text: How do we compare the size of numbers that are around the size of Graham's number or larger?
negative_passages.docid: 124209
negative_passages.text: How is $\ln(-1) = i\pi$?