Here's what it means:
* Cubic centimeters (cc) are a unit of volume.
* 125cc is a relatively small volume, often used to measure the displacement of engines in motorcycles and scooters.
How it relates to engines:
* Engine displacement refers to the volume of space inside the cylinders that the piston moves through.
* 125cc engines are generally considered small and are known for their fuel efficiency and maneuverability.
To summarize: 125cc is a volume measurement, and you don't calculate it – it's a fixed value. It's commonly used to describe the displacement of small engines.