Answer:
Liam descended 5,050.25 feet.
Explanation:
Liam descended from the summit of K2 (elevation= 28,251.31 feet) to an elevation of 23,201.06 feet.
You have to find the difference between 28,251.31 feet and 23,201.06 feet. To find the difference you have to subtract:
feet
Hence, Liam descended 5,050.25 feet.