Or the length and width of the rectangle could ... Practise working out how to convert metric units for area and volume with this quiz. You may need a pen and paper to help you with your answers.

The kilometer (km) is a standard unit of measurement used in the metric system. Derived from the French "kilomètre," the unit is used to measure length ... in this conversion, we're referring ...

or among units of length, volume and weight. In other words, the French introduced not only national standards, but a system of standards. It survives today as the metric system.

Key units such as inches, feet, and pounds became entrenched in daily life. Length ... metric system’s simplicity lies in its decimal structure (e.g., 1 meter = 100 centimeters), making ...