It's about 2900Km thick
It is 2,867km thick, which is 1,781 miles thick.
The above answer is correct too though, and is probably easier to remember.
The Earth's mantle is about 1800 miles thick.
The Earth's outer core is thicker than the mantle. The outer core is about 2,260 kilometers thick, while the mantle is approximately 2,900 kilometers thick.
Very good question. Many people have been wondering this, actually. How thick is the Earth's mantle? Well, I did some research and found out that the Earth's mantle is about 1800 miles thick, or 2900 kilometers thick. It contains about 80 percent of the Earth's mass. Wow!
mantle
MANTLE
Earth's mantle is about 1,800 miles thick.
The layer of rock that is approximately 1800 miles thick is the mantle layer of the Earth. The mantle is located between the Earth's crust and its core, and it comprises the majority of the Earth's volume.
it is about 1900 KM thick
about 20 inches
The mantle layer of the Earth is approximately 2,900 kilometers (1,800 miles) thick. It is located between the Earth's crust and core. The mantle is composed of solid rock that can flow slowly over long periods of time.
the inner mantle of the earth is aproximatly 2850km thick.
The mantle is found between the core and the innermost layer of the earth. The mantle is made up of mostly solid rock that is 1,802 miles thick.