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In 1856, the Great Trigonometric Survey of British India established the first published height of Everest, then known as Peak XV, at 29,002 ft(8,840 m). In 1865, Everest was given its official English name by the Royal Geographical Society upon recommendation of Andrew Waugh, the British Surveyor General of India at the time, who named it after his predecessor in the post, and former chief, Sir George Everest.
The 8,848 m (29,029 ft) height given in this article is now officially recognized by both Nepal and China. On 9 October 2005, after several months of measurement and calculation, the Chinese Academy of Sciences and State Bureau of Surveying and Mapping officially announced the height of Everest as 8,844.43m (29,017.16 ft) with an accuracy of ±0.21m (0.69 ft).They claimed it was the most accurate and precise measurement to date. This height is based on the actual highest point of rock and not on the snow and ice covering it. The Chinese team also measured a snow/ice depth of 3.5m (11 ft), which is in agreement with a net elevation of 8,848m (29,029 ft). The snow and ice thickness varies over time, making a definitive height of the snow cap impossible to determine.
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