A planet has a mass about 5.5 times the earthi's mass and a densty 1.76 g/an'....

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A planet has a mass about 5.5 times the earthis mass and a densty 1.76 g/an. What S Its radius expressed in (a) kilometers and (b) asa multipe of earths ralin ? (Hint Use Mearth-5.97 x 10 kg and Rearth 6.38 x10° m )

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