The highest known volcano on Earth is Mauna Kea in the Hawaiian Islands. Its height from base to summit is even 358 meters greater than the elevation of the world's highest mountain, Mount Everest. However, it does not rise from land but from the bottom of the Pacific Ocean, from a depth of 5000 meters. If the sea level in this area were to drop by 397 meters, the submerged part of Mauna Kea would be exactly as high as the part that would protrude above the water surface.

1. What is the elevation of the volcano's summit?
2. What is the height of Mauna Kea from base to summit?
3. What is the elevation of Mount Everest?

(The elevation data provided in various sources may differ due to measurement inaccuracies, movements of the Earth's crust, snow cover, etc. Therefore, use only the data provided in the problem for solving it.)
2. If the sea level dropped by $397 \mathrm{~m}$, the submerged part of the volcano would be $5000-397=4603(\mathrm{~m})$. Therefore, the height of Mauna Kea from its base to the summit would be $4603+4603=$ $=9206(\mathrm{~m})$.

1. It follows that the summit of the volcano is at an elevation of $9206-5000=4206(\mathrm{~m})$ above sea level.
2. And Mount Everest has an elevation of $9206-358=8848(\mathrm{~m})$ above sea level.