CIRCLE FACTS
What is the CIRCUMFERENCE of a Circle?
The perimeter or distance around the circle.
What value of PI did the Egyptians obtain 2000 BC
256/81 or 22/7
Who was the person know to find the first calculation of pi? When was it (year)?
Archimedes of Syracuse (287 -212 BC)
Who holds the current title for most digits of PI?
Suresh Kumar Sharma
How many digits of PI are currently known?
12.1 trillion digits of PI.
What ratio does PI represent?
Circumference to Diameter
What value of PI did the Babylonians obtain?
3.125
What is the symbol for pi? Who first introduced it and when? What Swiss mathematician was it popularized by?
In 1706, William JOnes first introduced the Greek letter Pi. Leonhard Euler made it popular in 1737.
How long did it take the current title holder to recite the digits of pi?
It took 17 hours, 14 minutes to recite.
How long did the task take to calculate out the number of known digits of PI?
94 days
What is PI to 30 decimal places?
3.141592653589793238443386264333279
In Sept 1999, Takahasi & Kanada calculated PI to 206,158,430,000 decimal places. What type of computer did they use?
Hitachi SR-8000
In the first one million digits of pi, how many threes are there?
3 appears 100,2229 times
When did the event occur for the current title of most digits of pi?
October 21, 2015
What mathematical formula was used to calculate out the number of digits of PI currently known?
The Chudnovsky Formula
What is the DIAMETER of a Circle?
The distance across the circle in the midpoint.
Which fraction is closest to the actual value of PI:
337/120
22/7
355/113
256/81
344/114 = 3.14159292
In the first one million digits of pi, how many nines are there?
9 appears 100,106 times
Who memorized 42,195 digits of PI on Feb 18, 1995 and where were they from?
Hiroyuki Goto and they were from Japan
How many total pies did Mrs. B bring to school for Pi day?
6 (2 full pies for each class)
Is PI a rational or irrational number? Explain why?
Yes! It's irrational because the decimals are non-terminating, non-repeating and cannot be written as a ratio.
Morbus Cyclometricus
When a computer is infected with an evil power onboard the Starship Enterprise, how does Dr. Spock resolve the problem?
He commanded the computer to calculate the digits of PI until the crew could deactivate it.
How many years did the person who held the world record?
10 years from: 1995 - 2005
What is the relationship of a diameter to PI?
It takes 3.14... diameters to go around the circumference of a circle.