Question: When is the National Pi Day is observed?
(a) March 14th
(b) April 14th
(c) May 14th
(d) June 25
Answer: (a)
Related facts:
- National Pi Day observed annually on March 14th recognizes the mathematical constant π.
- Also known as Pi, the first three and most recognized digits are 3.14.
- The day is celebrated by Pi enthusiasts and pie lovers alike! Pi is the ratio between the circumference of a circle and its diameter.
About Pi:
- Pi has been known for almost 4000 years.
- Mathematicians started to use the Greek letter π in the 1700s.
- It was introduced by William Jones in 1706.
- The use of the symbol was popularized by Leonhard Euler, who adopted it in 1737.
- An 18th-century French mathematician, Georges Buffon, devised a way to calculate π based on probability.
Links:
https://nationaldaycalendar.com/national-pi-day-march-14/
https://www.exploratorium.edu/pi/history-of-pi