what's the world's tallest mountain?
Although Mount Everest, at 29,035 ft (8,850m) tall, is often called the tallest mountain; Mauna Kea, an inactive volcano on the island of Hawaii, is actually taller. Only 13,796 feet of Mauna Kea stands above sea level, however, if you measure it from its base, which is below sea level, it is 33,465 feet.