Generally the length of meter is equal all over the world . why?
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10
Answer: because it is a S.I unit
Explanation:
It is used allover the world
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3
Answer:
Explanation:
The SI unit symbol is m. 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 – as a result, the Earth's circumference is approximately 40,000 km today.
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