Answer:
Tall Mountain is 30110.87 feet high.
Step-by-step explanation:
Tall Mountain is 8,709.37 feet higher than Mt. Might. If we know that Mt. Might is 20,401.5 feet high, we have to do 20,401.5 + 9,709.37, which equals 30110.87.
Tall Mountain is 30110.87 feet high.