i got my answer from merriam-webster's student atlas
the answer is: MT. Everest 29,035 feet or 8,850m == ==
Mount Whitney, 14,505 feet
There are many mountainous forms on Earth. However, the tallest mountain is Mount Everest. It is 29,035 feet (8,850 meters) tall.
The Mt. Kilmanjiario Mountain is the highest mountain in Tanzania Africa. It is the highest free-standing mountain in the world at 5,895 meters or 19,342 feet above sea level.
Standing at 29.029ft high Mount Everest is the highest mountain in the world.
Hoverla mountain (Ukrainian: Говерла, Hoverla) at 2,061 metres (6,762 ft), is the highest mountain in Ukraine and part of the Carpathian Mountains.
Highest in elevation is the Blue Ridge Region. Sassafras Mountain, is South Carolina's highest point at 3,560 feet (1,085 m) is located in this area.
The highest peak in the Caucasus Mountains is Mount Elbrus, which reaches an elevation of 18,510 feet (5,642 meters) above sea level.
The highest point in Montgomery, Alabama is actually called Montgomery County High Point. It is a mountain peak that has a height of 612 feet. It is the 44th highest point in the state of Alabama.
Mount Everest is approximately 29,032 feet (8,848 meters) above sea level, making it the highest mountain in the world.
The highest mountain in Luzon is Mount Pulag, which stands at an elevation of 2,926 meters (9,600 feet) above sea level. Many hikers and nature enthusiasts visit Mount Pulag National Park to witness its renowned sea of clouds phenomenon at sunrise.
The height of Mount Olympus is 9,573 feet. This is equivalent to 2,918 meters in height. It is the highest mountain in Greece.
806 Feet