This is the simplest way to calculate pi. The ratio is between the radius of a circle and this.
What is the circumference of a circle?
100
This is the ratio of the perimeter to height of the Giza Pyramid--which demonstrations one of the earliest uses of Pi.
What is 2π?
100
In this trial, the defense attorney and the FBI agent fought over the approximation of pi to determine credibility.
What is the OJ Simpson trial?
200
This person used another infinite series of "nestling" the number 2 underneath radicals to demonstrate that pi was infinite.
Who is François Viète?
200
Archimedes of Syracuse, in 3rd century BC, used this to calculate pi to be 3.1416.
What is the Pythagorean Theorem?
200
The first 144 digits of pi add up to this interesting number.
What is 666?
300
This person used a simulation of dropping needles in his calculation of pi.
Who is Georges Buffon?
300
In 1706, William Jones created the pi symbol, but this person gave it the much needed popularity.
Who is EULER?!?! (No points if you said You-ler)
300
This mathematician was born on pi day in 1879.
Who is Albert Einstein?
400
This document is the oldest in existence to have a written approximation of pi to be 3.160493827
What is the Rhind Papyrus?
400
In 500 AD, Zu Chongzhi calculated pi using this type of figure. (Double points if you can give the number of sides)
What is a regular polygon with 24,576 sides?
400
In 1897, this state tried to legally establish the value of pi to be 3.140
What is Indiana?
500
This inventor could approximate pi to 3.14159 with 500 iterations of this infinite series:
(4/1)-(4/3)+(4/5)-(4/7)+(4/9)-(4/11)+(4/13)-(4/15)....
Hint: He actually stole this formula from another inventor.
Who is Leibniz?
500
The Babylonians created this early approximation for pi.
What is 22/8 or 3.1250?
500
This German mathematician spent his entire life calculating pi to the 20th digit using a 500,000,000 sided polygon. In his honor, in Germany, pi can be referred to by his name.