How many litres are there in one cubic meter?

The correct answer is that there are 1,000 litres in one cubic meter. This conversion is grounded in the metric system, where one cubic meter (m³) is defined as the volume of a cube with edges that are one meter long.

Since a litre is defined as the volume of one cubic decimetre (dm³), we can relate the two measurements. There are 10 decimetres in a meter, hence 1 cubic meter equals 10 x 10 x 10 or 1,000 cubic decimetres. Given that one litre is equivalent to one cubic decimetre, it follows that one cubic meter is also equivalent to 1,000 litres.

In comparison, the other options provide alternative measurements or incorrect associations. For instance, while 1 yard³ is a measure of volume in cubic yards, it does not equate to litres or cubic meters, and furthermore, it is a different unit altogether with its own conversion factors. Similarly, 10,000 millilitres, although related (since 1 litre = 1,000 millilitres), fails to consider that a cubic meter contains 1,000 litres, not 10,000 millilitres directly. Lastly, while