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The mystery of pi and 355/113

Who discovered this mysteriously accurate value for π ? Celebrate #PiDay with the untold story of 355/113 and learn a history of pi that schools do not teach. 0:00 intro 2:25 accurate 355/113 4:05 the mystery 6:42 summary facts 7:52 Liu Hui 14:40 Zu Chongzhi 15:58 He Chengtian 22:07 deriving 355/113 Get early access to videos by supporting the channel    / @mindyourdecisions   Patreon   / mindyourdecisions   https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... Story of pi    • [Story of pi] How Zu Chong Zhi got 22/7 an...   https://en.wikipedia.org/wiki/Rod_cal... Milü https://en.wikipedia.org/wiki/Mil%C3%BC Chronology of computation of π https://en.wikipedia.org/wiki/Chronol... Liu Hui's π algorithm https://en.wikipedia.org/wiki/Liu_Hui... Pi https://en.wikipedia.org/wiki/Pi Mystery of 355 over 113 https://web.archive.org/web/201003222... https://news.ycombinator.com/item?id=... https://en.wikipedia.org/wiki/Zu_Chon... mediant https://en.wikipedia.org/wiki/Mediant...) https://math.stackexchange.com/questi... Subscribe: https://www.youtube.com/user/MindYour... Send me suggestions by email (address at end of many videos). I may not reply but I do consider all ideas! If you purchase through these links, I may be compensated for purchases made on Amazon. As an Amazon Associate I earn from qualifying purchases. This does not affect the price you pay. Book ratings are from January 2025. My Books (worldwide links) https://mindyourdecisions.com/blog/my... My Books (US links) Mind Your Decisions: Five Book Compilation https://amzn.to/2pbJ4wR A collection of 5 books: "The Joy of Game Theory" rated 4.2/5 stars on 564 reviews http://amzn.to/1uQvA20 "The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" rated 4.2/5 stars on 55 reviews http://amzn.to/1o3FaAg "40 Paradoxes in Logic, Probability, and Game Theory" rated 4.2/5 stars on 81 reviews http://amzn.to/1LOCI4U "The Best Mental Math Tricks" rated 4.3/5 stars on 148 reviews http://amzn.to/18maAdo "Multiply Numbers By Drawing Lines" rated 4.5/5 stars on 57 reviews http://amzn.to/XRm7M4 Mind Your Puzzles: Collection Of Volumes 1 To 3 https://amzn.to/2mMdrJr A collection of 3 books: "Math Puzzles Volume 1" rated 4.4/5 stars on 138 reviews http://amzn.to/1GhUUSH "Math Puzzles Volume 2" rated 4.2/5 stars on 45 reviews http://amzn.to/1NKbyCs "Math Puzzles Volume 3" rated 4.3/5 stars on 38 reviews http://amzn.to/1NKbGlp 2017 Shorty Awards Nominee. Mind Your Decisions was nominated in the STEM category (Science, Technology, Engineering, and Math) along with eventual winner Bill Nye; finalists Adam Savage, Dr. Sandra Lee, Simone Giertz, Tim Peake, Unbox Therapy; and other nominees Elon Musk, Gizmoslip, Hope Jahren, Life Noggin, and Nerdwriter. My Blog https://mindyourdecisions.com/blog/ Twitter   / preshtalwalkar   Instagram   / preshtalwalkar   Merch https://teespring.com/stores/mind-you... Patreon   / mindyourdecisions   Press https://mindyourdecisions.com/blog/press