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 Patreon : :%E7%A5%96%E5%86%B2%E4%B9%8B%E9%93%9C%E5%83% Story of pi Milü %C3%BC Chronology of computation of π %CF%80 Liu Hui's π algorithm %27s_%CF%80_algorithm Pi Mystery of 355 over 113 :// mediant (mathematics) Subscribe: 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) #worldwide My Books (US links) Mind Your Decisions: Five Book Compilation A collection of 5 books: "The Joy of Game Theory" rated 4.2/5 stars on 564 reviews "The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias" rated 4.2/5 stars on 55 reviews "40 Paradoxes in Logic, Probability, and Game Theory" rated 4.2/5 stars on 81 reviews "The Best Mental Math Tricks" rated 4.3/5 stars on 148 reviews "Multiply Numbers By Drawing Lines" rated 4.5/5 stars on 57 reviews Mind Your Puzzles: Collection Of Volumes 1 To 3 A collection of 3 books: "Math Puzzles Volume 1" rated 4.4/5 stars on 138 reviews "Math Puzzles Volume 2" rated 4.2/5 stars on 45 reviews "Math Puzzles Volume 3" rated 4.3/5 stars on 38 reviews 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 Twitter Instagram Merch Patreon Press