The acreis a unit of land area of 43,560 sq ft. This is equivalent 1 chain (22 yards) by 1 furlong (220 or 1⁄640 of a square mile. This is difficult to picture as terms like chain and furlong are not in common use. It is easier to say that an acre is about 208 ft by 208 ft. An area of 100 acres is therefore about 2080 ft by 2080 ft. (if it is a square) You can still mark out an area of 100 acres in different aspects. For example a hundred acres could be 1 ft wide and 4,356,000 ft long
