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The area ploughed by the oxen in one day

Symbol: ac / Base data: Imperial units.
1 acre = 4046.856m2 (United States)

Used to express the area of farmland

The “acre” comes from a pair of yoked oxen. It expresses the area ploughed by the two oxen in one day. It originates from Greece, and the Greek word of “Giounkrám” which expresses a “yoke.” By the way, Tokyo Dome is about 12 acres in size, so it would take 24 oxen to plough it in one day.