I don’t think there is a measuring tape long enough…
In: 3
You can measure it in 3 different ways:
* From sea level
* From the mountain base (which can be below sea level)
* Longest distance from the center of the globe
Generally, sea level is used but be aware it is important to define also which sea level as this varies from country to country (and even from area to area within a large country).
(The jokes of railway/tunnel constructions meeting in the middle but with different heights were real.)
Depending on which method you use, you will get different answers for the question “What is the highest mountain?”.
Answer: It is Olympus Mons, which is located on Mars. 🙂
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