Units of measurement
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Square chain (ch²)
Square kilometer (km²)
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Information
Square chain (ch²)
A square chain (ch²) is a British unit of area measurement equal to 404.69 m² or 1/10 acre.
Square kilometer (km²)
A square kilometer (km²) is used for measuring large areas, such as cities, forests, and countries. One km² equals 1,000,000 m².