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Explore the world of Pi with facts, formulas, and trivia! Learn about the meaning of Pi, its value, history, and celebrations like Pi Day. Discover the formulas for area, circumference, volume of a cylinder, surface area, and more. Dive into Pi humor with pumpkin pi, Eskimo pi, cow pi, and pi a’la mode. Uncover the fascinating references to Pi in history, including the Indiana Pi Bill and biblical verses, and test your knowledge with Pi-themed Jeopardy questions. Get ready for a fun-filled journey into the mathematical realm of Pi!
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The definition of pi
What is the ratio of a circle’s circumference to its diameter?
This famous mathematician’s birthday is on the same date as Pi Day.
The best time of day to celebrate Pi Day, according to the third, fourth, and fifth digits following the decimal
A date during the summer which could be another good time for Pi Day
What is A=r2?
What is C = 2r or C = d?
What is V = r2h?
What is S = 2rh + 2r2h?
What is V = 1/3r2h?
This is what you get when you divide the circumference of a jack-o-lantern by its diameter.
This is what you get when you divide the circumference of a native Alaskan by his/her diameter.
This is what you get when you divide the circumference of the sun by its diameter.
This is what you get when you divide the circumference of a bovine by its diameter.
This is what you get when you divide the circumference of a bowl of ice cream by its diameter.
One of the two books in the Bible that gives a reference to the value of 𝛑
What is 1 Kings or 2 Chronicles? I Kings 7:23, II Chronicles 4:2 -- in describing the furnishings of Solomon’s Temple – “. . . made the Sea of cast metal, circular in shape, measuring ten cubits from rim to rim . . . a line of thirty cubits to measure around it . . .”
The U.S. state in which a bill was introduced to legislate the value of pi
What is Indiana? This is Indiana House Bill No. 246, 1897, known as the Indiana pi bill. Towards the end of section 2 it says plainly that "The ratio of the diameter and circumference is as five-fourths to four," which means pi is 3.2. The section goes on to criticize past values of pi as "wholly wanting and misleading."
The number of centuries for which the letter 𝛑 has been used to represent this special mathematical ratio
What is 3? (This use of the letter pi first showed up in mathematical writings in about 1706.)