- A unit of length in the metric system, equal to one thousandth of a meter (0.001 meters).
- Used to measure linear dimensions, such as the length, width, and height of objects.
- Typically used for small measurements, such as the thickness of paper, the diameter of a wire, or the size of a grain of sand.
Cubic centimeter (cm³):
- A unit of volume in the metric system, equal to the volume of a cube with sides that are each one centimeter long.
- Used to measure the volume or capacity of three-dimensional objects, such as liquids, solids, or gases.
- Typically used for small volumes, such as the volume of a medicine dose, the displacement of a floating object, or the size of a cell.
Key difference:
- Millimeters measure length (one-dimensional), while cubic centimeters measure volume (three-dimensional).
- To visualize the difference, imagine a 1 mm x 1 mm square. Its area would be 1 mm². Now, imagine a cube with sides of 1 cm each. Its volume would be 1 cm³. The cube would be much larger in size compared to the square, as it represents three-dimensional space.