1. The problem statement, all variables and given/known data It is given that the period of Mercury is 87.9 days and the angular speed of Mercury is 8.27*10^-7 I am asked to find the radius of Mercury. I have no idea how to calculate the radius just the two pieces of information given. Should there also be the linear velocity of Mercury given in order to calculate the radius?? 2. Relevant equations v= r ω ω= 2∏/T a= v^2/r or a= r ω^2 Any help would be greatly appreciated. Thank you!