Units of measurement
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Rood (rood)
Square nautical mile (nmi²)
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Rood (rood)
A rood is an old British unit of area measurement, equal to 1/4 acre (1011.71 m²).
Square nautical mile (nmi²)
A square nautical mile (nmi²) is a unit of area used in maritime navigation, equal to 3.43 km².