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Explore the fascinating untold history of pi through this 26-minute educational video that reveals the mystery behind the remarkably accurate fraction 355/113. Discover who first calculated this precise approximation of π and learn about the mathematical achievements from ancient China that aren't typically taught in schools. Follow the historical journey through the work of mathematicians Liu Hui, Zu Chongzhi, and He Chengtian, and understand how the value 355/113 was mathematically derived. The video provides a comprehensive timeline from introduction to the accuracy of this fraction, examines the mystery of its discovery, presents key historical facts, and demonstrates the mathematical techniques used to arrive at this approximation that is accurate to six decimal places.
