Answer:
10 cm
Explanation:
The height of a coffee mug would be only 10 cm.
If it was 500mm, it would be 50 cm or more than a feet.
If it was 1 km it would be "inmense".
10 cm is about 4 inches and that is the appropriate size.
Extra info: Coffee mug would only be 3.75 inches which is 10 cm if rounded