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Home Q & A Board Science-Related Homework Help Mathematics
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ugdesign ugdesign
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8 years ago
Earth Atmosphere is relatively thin shell.  Half the mass of the atmosphere is within 5 Km (3.1 miles) of the surface, and 90 percent is within (12.4 miles). Twenty km is not very far-about a 10-minutes drive on most interstate highways.  By comparison Earth’s radius is 6,378 km (3963 miles). 

Question 1:   What percent of the Earth’s radius is 20 kilometers?
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BearProBearPro
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8 years ago
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ugdesign Author
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8 years ago
Thank you so much!
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