ethys, one of Saturn's moons, travels in a circular orbit at a speed of 1.1x104 m/s. The

Question

mass of Saturn is 5.67x1026 kg. Calculate
a) the orbital radius in kilometres.( i know how to do this part, the answer is 3.1x10^8 m)
b) the orbital period in Earth days.

Answer 1

you know the radius and the speed, so
time = distance/speed = (2π * 3.1*10^8)/(1.1*10^4)
that gives the time in seconds. I figure you can convert that to earth days ...