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
USS Apache (SP-729) Bug" (SP-1795), USS "Sea Hawk" (SP-2365), USS "Kangaroo" (SP-1284), and "SP-729"—to be shipped to France as deck cargo along with spare parts to keep them operational. However, this proposed movement appears to have been cancelled, probably because of the armistice with Germany of 11 November 1918 that ended World War I and eliminated the need for more U.S. Navy patrol craft in Europe. Instead, "SP-729" headed south via the inland waterway in December 1918, bound for Naval Air Station Pensacola at Pensacola, Florida, probably for duty as a crash boat. "SP-729" was decommissioned at Key West, Florida, and stricken from