Units of measurement
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Square rod (rd²)
Square kilometer (km²)
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Information
Square rod (rd²)
A square rod (rd²) is an old British unit of area, equal to 25.29 m² or 1/160 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.