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13 September, 14:46

Generally the length of metre is equal all over the world why?

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  1. 13 September, 17:37
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    It is an SI unit

    Explanation:

    The metre is defined as the length of the path travelled by light in a vacuum in 1299 792 458 of a second. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole
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