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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[–] 8 points 2 years ago (1 child)

In Romania we use them for measuring areas. An "ar" is 100m^2 or a square decameter, and a hectare is a 10000m^2 or a square hectometer.

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