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The cubic meter (m³) is the standard unit of volume in the International System of Units (SI). It corresponds to the volume of a cube with sides of 1 meter each.
A cubic meter is based on the shape of a cube. A cube is a three-dimensional shape with six equal square sides. In the context of a cubic meter, all sides of this cube are exactly one meter long.
The volume of a cube is calculated by cubing the length of a side (multiplying the length three times by itself). In the case of a cubic meter, where each side is one meter long, the volume is thus 1 meter x 1 meter x 1 meter, which equals one cubic meter.
In practice, the cubic meter is used to measure large volumes, such as the volume of a room, the content of a swimming pool, or the capacity of a large storage tank. It is also used in science and engineering to measure things like airflow, noise level, and the concentration of substances in the air or water.
A liter (L) is a unit of volume that is commonly used for measuring liquids and gases. The liter is not an SI unit, but its use is accepted within the SI system. A liter corresponds to the content of a cube with sides of 10 cm (or 1 decimeter).
A cubic meter is equal to 1000 liters. This is because the sides of the cube that defines a liter are 1/10th of the sides of the cube that defines a cubic meter, and the volume of a cube is given by the cube of the side length. So if the side length is 10 times smaller, the volume (10^3) = 1000 times smaller.
1 liter = 0.001 cubic meter
1 cubic meter = 1000 liters