this post was submitted on 12 Feb 2025
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I believe that is 381 km squared, not 381 square kilometers. Vastly different areas. Germany is much larger than 381 square kilometers.
Oops. You are correct. Thank you. Fixing.
If it's a square 381km x 381km then that's 145161km² (and I'm not aware that there's any difference between "square kilometres" and "kilometres squared", is there?)
Square x and x squared is the same thing. The proper way to say this is "A square of 381 km width"
It's very common to use km^2 (or m^2 or whatever) as a unit of area, with the understanding that a square with x km sides has area x^2 km^2. I can see what you're saying, but I think most people would call that area 'over 145 000 square km' or something, rather than talk about the side length.