A cubic meter is a unit of volume in the metric system, representing the space occupied by a cube with sides measuring one meter each. It is commonly used to measure larger quantities of liquids, gases, and solids. For example, a cubic meter of water weighs about 1,000 kilograms, making it a useful reference for various scientific and engineering applications. In everyday life, cubic meters can help people understand the size of objects or spaces. For instance, a small room might have a volume of around 30 cubic meters, while a large shipping container can hold about 33 cubic meters of goods. This measurement is essential in fields like construction and logistics.