Cube root this required the construction, now known to be impossible, of the length . A method for extracting cube roots appears in "The Nine Chapters on the Mathematical Art", a Chinese mathematical text compiled around the 2nd century BCE and commented on by Liu Hui in the 3rd century CE. The Greek mathematician Hero of Alexandria devised a method for calculating cube roots in the 1st century CE. His formula is again mentioned by Eutokios in a commentary on Archimedes. In 499 CE Aryabhata, a mathematician-astronomer from the classical age of Indian mathematics and Indian astronomy, gave a method for finding
Ohio State Route 729 41 continues north to South Solon, and SR 729 turns right. North of Jeffersonville, the route makes three more 90-degree S-curves before entering Madison County. SR 729 ends at an intersection with SR 323 between the villages of South Solon and Midway. SR 729 was first designated in 1937 between what was then US 35 near Octa and Milledgevile (now the eastern terminus of SR 435) and its present northern terminus. In 1940, the route was extended south on a new alignment to Sabina and took over SR 350 from SR 73 to Sabina (SR 350 at that time ran