Cubic Millimeters
Cubic millimeters are volume units in the metric system. A cubic millimeter is a unit of volume equal to the volume of a cube with sides measuring one millimeter each. It is a very small unit of volume commonly used to measure tiny amounts of liquids or solids. For example, a single drop of water may have a volume of approximately 50 cubic millimeters.
Metric cups
Metric cups are used in cooking and baking to measure ingredients such as flour and sugar. One metric cup is 250 milliliters or a quarter of a liter.