Units of measurement
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Ar (a)
Quadratzoll (in²)
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Ar (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.
Quadratzoll (in²)
A square inch (in²) is a unit of area in the British and American measurement systems, equal to a square with a side of 1 inch (2.54 cm).