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A rood /ˈruːd/ is an historic English and international inch-pound measure of area, as well as an archaic English measure of length.
The are (/ˈɑːr/ or /ˈɛər/) is a unit of area, equal to 100 square metres (10 m × 10 m), used for measuring land area. It was defined by older forms of the metric system, but is now outside of the modern International System of Units (SI).