How tall is 180cm? Is 180cm tall?
Whether or not you find 180cm to be tall is pretty subjective. Someone who is 180cm might look short to you, or tall to you, depending on your own height.
If I am 180cm, am I tall or short?
It really depends on your age and the height of the population around you. In some countries 180cm might be considered tall, but in other countries it could be considered short.