Final answer:
A square unit of measure is used to measure area, while a cubic unit of measure is used to measure volume.
Step-by-step explanation:
A square unit of measure is used to measure area, which is the measure of the amount of surface covered by a 2-dimensional shape. It is represented by the unit of square length, such as square meter (m²) or square centimeter (cm²). For example, if you have a square with side lengths of 5 cm, the area would be 5 cm x 5 cm = 25 cm².
A cubic unit of measure is used to measure volume, which is the measure of the amount of space occupied by a 3-dimensional shape. It is represented by the unit of cube length, such as cubic meter (m³) or cubic centimeter (cm³). For example, if you have a cube with side lengths of 3 cm, the volume would be 3 cm x 3 cm x 3 cm = 27 cm³.