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Square kilometre (U.S. spelling: square kilometer), symbol km2, is a decimal multiple of the SI unit of surface area, the square metre, one of the SI derived units. 1 km2 is equal to:
Conversely:
Note: "km2" means (km)2, square kilometre or kilometre squared, and not k(m2), kilo–square metre. For example, 3 km2 is equal to 3×(1,000m)2 = 3,000,000 m2, not 3,000 m2. [edit] Comparative orderThe 106 m2 orders of magnitude page gives comparisons with geographic areas. A hectare (104 m2) is less than a square kilometre which is less than a square megametre (1012 m2). This is [edit] Source
[edit] See also
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