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How do you calculate the mass of the earth if the density is 5450 kg m3 and the radius is 6371 km?
Wiki User
∙ 10y ago
Volume = 4/3*pi*r3 = 4*3*pi*63713 km3 = 1,083,206,000,000 km3
= 1.083 206*1012 km3
Density = 5450 kg/m3
Density = 5450*109 kg/km3
Density = 5.45*1012 kg/km3
So Mass = Density*Volume
= 1.083*1012 *5.45*1012 = 5.903*1024 kg.
Greater "precision" in the figures would be spurious since the earth is not a perfect sphere
Wiki User
∙ 10y ago
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