Answer:
square inch — is a unit of area, not volume
Explanation:
Some volume measures have their own unit, like liters, cups, pints, quarts, gallons, bushels, or barrels.
Other volume units are the cube of a linear measure, such as cubic centimeters, cubic inches, cubic feet, or cubic meters.
Still other volume units are a hybrid of an area measure and a linear measure, such as acre-feet.
A measure that is the square of a linear unit is an area measure, not a volume measure.