On 2006 Jan 2 , at 3:50 PM, Martin Vlietstra wrote,
discussing a unit of area between 1 m^2 and 1 km^2:

If the intermediate unit was 10^3 m^2, it would

represent an awkward area - a square with sides of length 10*10^2 m (approx

31 m). 


That can't be right.

I can easily see why a square with an area of 1000 m^2 would have sides of approximately 31 m, but how do you get "length 10*10^2 m" which is 1000 m and is not the correct length of the side and is also not approximately equal to 31 m.

I'm sure you meant to write "length of THE SQUARE ROOT OF 10*10^2 m" which 
equals  31.62... m. Could this be one of those cases of special symbols; where you typed a radical (square root sign) before the number, which was OK in your email but which was not tranxmitted or received correctly by other computers?

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