Units of measurement
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Square foot (ft²)
Square kilometer (km²)
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Square foot (ft²)
A square foot (ft²) is a unit of area measurement widely used in construction and real estate, equal to 0.092903 m².
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.