You are planning your trip using a road map with a scale of 1:200,000. 1 cm on the map corresponds to how many kilometres in reality?

You answered correctly. When a map has a scale of 1:200,000, it means that one unit on the map represents 200,000 of the same units in reality. Since 1 cm on the map equals 200,000 cm in real life, and there are 100,000 cm in a kilometer, this means 1 cm on the map represents 2 kilometers. Understanding map scales helps you estimate real distances accurately while planning your route.