Question 1053631
Earth has a thin outer layer called the crust, which averages about 24 km thick. Earth's diameter is about 12,750 km. What percentage of the volume of Earth is the crust?
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Find the volume of the Earth.
{{{Vol = 4pi*r^3/3}}} r = 6375
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Find the volume of the Earth without the crust.
{{{Vol = 4pi*r^3/3}}} r = 6375 - 24
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Volume of the crust is the difference of the 2 volumes.
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Divide the crust volume by the Earth's volume.
Multiply by 100 to get %