The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 km.
Mitara yi hlamuseriwe ro sungula hi lembe ra 1793 kuri mpfhuka wa khume hi kuleha eka timiliyoni eka mpfhuka wo suka e xikarhi ka misava ya e ximhandzanini xale n'walungu wa misava - hikwalaho xirhendzevutana xa misava xina magwa wa ti magidi ya ti mitara ya kwalomu ka 40,000.