A planet with mass 7 x 1024 kg orbits a sun with a period of 1 Earth's years. The speed of the planet around that sun is constant and |v|=42000 m/s. What is the mass of that sun?

The mass of the sun is  

Explanation:

From the question we are told that

       The mass of the planet is  

        The  period of the planet is  

        The speed of the planet is  

Generally the radius at which the planet orbits the sun is mathematically represented as

Where is the gravitational constant with value  

   and   is the mass of the sun

Generally the period of planet is mathematically represented as

=>      

=>        

substituting values  

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

do you have a formula possibly