What unit of measurement is equivalent to 5280 feet?

The correct unit of measurement equivalent to 5280 feet is 1 mile. This conversion is fundamental in measuring distance and is based on the definition that a mile consists of exactly 5280 feet. This relationship is often used in various contexts, such as road signs and maps in countries that utilize the imperial system.

To give some context about the other options, a kilometer is approximately 3280.84 feet, which is less than a mile; therefore, it cannot equal 5280 feet. A yard measures 3 feet, so 5280 feet translates to a much larger number of yards, specifically 1760 yards. An acre is a unit of area, not length, and is defined as 43,560 square feet. Thus, while the units are all valid forms of measurement, only 1 mile corresponds correctly to 5280 feet.