How many square feet are there in an acre?

An acre is a unit of area commonly used in the United States and other countries that measure land. The correct answer is 43,560 square feet, which is the standard measurement of an acre. This value is derived from historical land surveying practices and has been standardized for agricultural and real estate purposes. An acre is defined as the area of a rectangle that is 66 feet wide and 660 feet long, which when calculated amounts to 43,560 square feet. Understanding this measurement is essential for tasks such as property assessment, land use planning, and landscaping, where knowledge of land area is crucial.