3.) The radius of earth is 6.40 x 106 m and its average density is 5.0 x 103 kg m-3.
Calculate the mass of earth to correct significant figures.
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Explanation:
m = 5 x 10x 4/3 (6.4 x 10 )
m= 5490.33x 10
m= 5.5 x 10 kg
Is it right
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