[General] If Mount Everest were flipped upside down into it, there would still be more than

[tahasozgen]

Hi There;
I have a passage from The Economist, "The world’s deepest ocean trenches are packed with pollution"

NOT far off the coast of Guam lies the deepest point on Earth’s surface, the Mariana trench. Its floor is 10,994 metres below sea level. If Mount Everest were flipped upside down into it, there would still be more than 2km of clear water between the mountain’s base and the top of the ocean.

View attachment 2566

I can not understand the phrase underlined. I visualize my understanding from the passage above. Are these propositions true?
1-) If Mount Everest were flipped upside down into Mariana Trench, it will look like dashed triangle in blue side.
2-) h2 = 10.994 metres
3-) Letter C denotes Mariana Trench.

In addition, which letter denotes mountain's base and top of the ocean? Thanks in advance.

 

[jutfrank]

h2 - h1 = 2km

(where h2 is the depth of the Mariana Trench and where h1 is the height above sea-level of Everest)

Obviously, there is no mathematical reason why Everest has to be upside down! This is just for conceptual purposes.

 

[tahasozgen]

Thank you. In addition, which letter denotes mountain's new proposed base and top of the ocean? Thanks in advance.

 

[SoothingDave]

Your picture is wrong. They are talking about taking the tip of the mountain and having it touch the ocean floor. You would then have 2 km of water between the base of the mountain and the top of the ocean surface.

Your picture has the base of the mountain at the top of the ocean surface.