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...ly defined as 1/10,000,000 of the distance from the equator to the [[north pole]] through [[Paris]], [[France]].[https://physics.nist.gov/cuu/Units/meter.h ...r is 43 km (27 mi) larger than the [[Geographical pole|pole]] to pole diameter. [https://www.ngdc.noaa.gov/mgg/bathymetry/predicted/explore.HTML]