Units of measurement
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Are (a)
Acre (ac)
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Information
Are (a)
An are (a) is a unit of area measurement equal to 100 m² (10×10 m). It is used in agriculture and cadastral measurements.
Acre (ac)
An acre (ac) is a traditional land measurement unit in the US and UK, equal to 4046.86 m² (approximately 0.4 ha).