I've learned about them in school, but I've never heard anyone say something is 8 decameters long or anything like that. I'm an American.

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[–] 19 points 2 years ago (2 children)

No, some measurements just aren't used, even when they'd be a good fit.

Like lengths. We never use anything above km. Even for things like space, we say "million km" rather than gigametre.

The closest we come to hectometre is hectare, which is used for land area.

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  • [–] 3 points 2 years ago (2 children)

    Megameters are sometimes used, that's not true.

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  • [–] 4 points 2 years ago (2 children)

    Where do you live and what is your profession? I have heard anyone use megameter seriously.

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