Question

You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 2.070E+7 m and its rotation to be 19.8 hours. You have previously determined that the planet orbits 1.590E+11 m from its star with a period of 368.0 Earth days. Once on the surface you find that the free-fall acceleration is 13.00 m/s2.

What is the mass of the star (in kg)?

Answer 1

Please read and apply my previous answer. See "related questions" below.

Answer 2

I did that and it still did not come out correctly.