SQUARE MEASURE 16 square rods (sq. rd.) = 1 square chain (sq. ch.). 10 square chains = 1 acre (A.). 640 acres = 1 square mile (sq. mi.). 36 square miles = 1 township (tp.). The Rudiments of Written Arithmetic: Containing Slate and Black-board ... - Σελίδα 137 των Horatio Nelson Robinson - 1866 - 192 σελίδες Πλήρης προβολή -
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