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To help compare different orders of magnitude this page lists lengths between 10 m and 100 m. See also lengths of other orders of magnitude. Shorter distances 10 m is equal to: 1,000 centimetres 10,000 millimetres 32.8 feet side of square with area 100 m2 10 m -- wavelength of the highest shortwave radio frequency, 30 MHz 21 m -- height of High Force waterfall in England. 23 m -- height of the obelisk of the Place de la Concorde, Paris. 25 m -- wavelength of the broadcast radio shortwave band at 12 MHz 30 m -- length of a blue whale, the largest animal 31 m -- wavelength of the broadcast radio shortwave band at 9.7 MHz 40 m -- average depth beneath the seabed of the Channel tunnel 49 m -- width of American football field 49 m -- wavelength of the broadcast radio shortwave band at 6.1 MHz 55 m -- height of the Leaning Tower of Pisa 60 m -- Pyramid of Djoser 70 m -- width of soccer field 70 m -- length of the Bayeux Tapestry 91 m -- length of American football field 100 m -- wavelength of the lowest shortwave radio frequency, 3 MHz Longer distances External link Conversion Calculator for Units of LENGTH (http://www.ex.ac.uk/cimt/dictunit/ccleng.htm)