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please help me!:) If a planet has 3 times the radius of the Earth, but has the same density as the Earth, what is the gravitational acceleration at the surface of the planet? (g = 9.8 m/s2) a. 29.4 m/s2 c. 265 m/s2 b. 88.2 m/s2 d. 3.27 m/s2
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