acre

• a standard Imperial or customary unit used to measure large areas.
• an acre is equal to 4,840 square yards or 43,560 square feet.

EXAMPLES: Sporting fields


Imperial/Customary Units ~ Area

144 square inches = 1 square foot
9 square feet = 1 square yard
4,840 square yards = 1 acre
640 acres = 1 square mile