# Volume of the Earth

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Volume of the Earth

The volume of the Earth is about 1,080,000,000,000,000,000,000 m3, or = 1.08&times;1021 m3, in scientific notation. See 1 E+21 m³ for other things of about this volume.

Calculation

Earth is an oblate spheroid, resembling a sphere flattened at the poles. While it is possible to take the take the non-spherical aspects into account, it is not usually done, as the gain in accuracy is not usually relevant.

The volume of a sphere is

:$V = frac\left\{4\right\}\left\{3\right\}pi r^3$

The average radius of the earth is 6.37&times;106 m, plugging that into the equation above the number listed above.

References

* [http://www.physlink.com/Education/AskExperts/ae419.cfm Question asked a "Ask the Expert" at PhysLink.com]

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