How thick is the earth?


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Though the earth is not a perfect sphere, the average radius is around 3,959 miles. The diameter would be twice this much. Chacha!

Answered by Heidi K. -

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The Earth's crust has a variable thickness, being 21-73 miles thick in the continents and 3-6 miles thick in the ocean basins. Thanks for using ChaCha!

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The Earth is approximately 6470 km thick- this includes the crust, the mantle and the core. Thanks for doing the ChaCha!

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The earth's CRUST thickness varies from about 2 to 70 KM depending on where you are. Earth's Radius is about 3963.19 statute miles

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