What is the unit of measurement for the area of an acre?

The unit of measurement for the area of an acre is square feet. An acre is defined as a unit of area that is equivalent to 43,560 square feet. This measurement is commonly used in land surveys and real estate, particularly in the United States, to describe large plots of land. Understanding that an acre is a measure of area rather than just linear dimensions is crucial, which distinguishes it from units like feet or yards that measure length rather than area.