The scale of the map is 1: 1,000,000. What is the distance between cities A and B (in km) if it is 2 cm on the map?

1. Let’s translate the scale of the map into a named one, if literally translate 1: 1000000, into 1 cm, 1,000,000 cm.

There are 100 centimeters in 1 meter, so a scale of 1 cm is 10,000 meters (1,000,000: 100 = 10,000).

There are 1000 meters in 1 kilometer, then a scale of 1 cm is 10 kilometers (10000: 1000 = 10).

2. Determine what the distance between cities A and B is equal to (in kilometers), if on the map it is 2 centimeters:

10 * 2 = 20 (km).

Answer: the distance between cities A and B is 20 kilometers, if the distance on the map is 2 centimeters.