Area, Square kilometre

Square kilometre (U.S. spelling: square kilometer), symbol km², is a decimal multiple of SI unit of surface area square metre, one of the SI derived units. It is not used as regular unit of measurement in the US. Read more

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- Square kilometre (Metric):

Area is a physical quantity expressing the size of a part of a surface. Surface area is the summation of the areas of the exposed sides of an object. Read more

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Area, Square kilometre

- Square kilometre (Metric):

Metric

British/American

Japanese