Calculating Radius of Jupiter's Orbit: A Synchronous Satellite Problem

[leisiminger]

A synchronous satellite is put in a circular orbit around Jupiter. Jupiter rotates once every 9.84 hours. Determine the radius of the satellites orbit from the center of Jupiter if the mass of Jupiter is given to be 1.9 x 10^27 kg.

I don't even know how to start this, I've looked up the equations and can't figure out where to start. I know that G = 6.67 x 10^-11 Nm^2/kg^2

 

[mgb_phys]

Start with kepler's 3rd law.
Since the satelites mass is much less than jupiter's you can ignore it.