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Chain (unit) - Wikipedia
Chain (unit) - Wikipedia
Linear Measurement 1 Chain = 100 links or 66 feet 1 Mile = 80 chains or 5,280 feet Area Measurement 1 Acre = 10 square chains or 43,560 square feet 1 square mile = 640 acres — Lola Cazier (1976), Surveys and Surveyors of the Public Domain 1785-1975, page 15
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Chain (unit) - Wikipedia