Posted by wesley on Monday, July 5, 2010 at 12:44pm.
Since you want density unit in g/cc, I would adjust the starting units, like so.
7.0 x 10^5 km = 1.0 x 10^10 cm (It's easier to do this at the start than at the end for me.)
The volume of a sphere is (4/3)*pi*r3 = ?? cc
Then mass = volume x density.
Convert mass to grams and solve for density.
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