History and Origins of Pi
Besides the well-known Pi Day (March 14th), there is another unofficial date associated with this constant. On what date is it celebrated, and what is the reason for this choice?
July 22nd.
This date is written as 22/7, which is a common and simple fraction used to approximate the value Pi
This is the date on which Pi Day is celebrated
March 14
The area of a circle is calculated using this formula
A=pi(r)2
What fraction is often used as an approximation of Pi?
22/7
The symbol representing the number 3.14 comes from which alphabet?
Greek alphabet
Who was the first person to propose a true mathematical method for calculating the value of Pi, rather than just measuring it?
Archimedes
Why is March 14 chosen for Pi Day?
Because 3/14 corresponds to 3.14
A right triangle has a semicircle drawn on its hypotenuse. The area of the semicircle depends on Pi and which side of the triangle?
Hypotenuse
What is the next digit after 3.14159265358979323846264338327950288419716939937?
5
There's an internet joke: "Never talk to the Pi number at a party." Give the reason.
Because it never finishes talking (goes on forever)
In which ancient civilization was the number Pi considered to be 3.16?
Ancient Egypt
What food is traditionally eaten on Pi Day because of the wordplay?
Pie
If you increase the radius of a circle by 10%, by what percentage does the area increase?
The area increases by 21%
What record for memorizing the digits of Pi is held by the Japanese man Hideaki Tomoyori, and how many digits can he recite?
First 40,000 digits
Where can one find a monument to the number Pi?
Seattle
The symbol Pi comes from the Greek letter. But what Greek word begins with this letter and is directly related to the geometric meaning of the number?
The symbol Pi comes from the Greek word "περιφέρεια", which translates to "periphery" or "circumference."
This famous physicist and mathematician was born on Pi Day
Albert Einstein
I am the distance around a circle. What am I?
Circumference
How many digits of Pi are known today?
100 trillion
In which animated TV series is it jokingly suggested that Pi equals 3?
The Simpsons
This symbol for Pi was introduced in 1706 by
William Jones
In which year did the U.S. House of Representatives officially recognize Pi Day?
2009
If a circle is perfectly inside a square, the ratio of the circle’s area to the square’s area involves Pi. This ratio is less than one. True or False?
True
Approximately how many digits of Pi do NASA scientists use for their most precise space calculations?
15
If someone memorizes 1 million digits of Pi, what do they win?
Respect from mathematicians and confusion from everyone else