On 7 April 1795, the metric system was formally defined in French law. It defined six new decimal units: The mètre, for length—defined as one ten-millionth of the distance between the North Pole and the Equator through Paris. The are (100 m2) for area [of land]
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On 7 April 1795, the metric system was formally defined in French law. It defined six new decimal units: The mètre, for length—defined as one ten-millionth of the distance between the North Pole and the Equator through Paris. The are (100 m2) for area [of land]