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the mass of the earth is 5.98 x 10^24 kg, and the average diameter is 12,700 km. Assum42ng the Earth is spherical, what is the average density of our planet in the g/cm^3

 Feb 6, 2020
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5.98 x 10^24 kg =  5.98 x 10^27 gm

 

Diameter = 12700 km    radius = 6350 x 10^5 cm

 

VOLUME of sphere =  4/3  pi  r^3

 

5.98 x 10^27 gm / (  4/3 pi (6350 x 10^5 cm)^3  )  = answer

 Feb 6, 2020
edited by ElectricPavlov  Feb 6, 2020
edited by ElectricPavlov  Feb 6, 2020

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