1. The problem statement, all variables and given/known data I have to find the mass of 55 Cancri in kg using the average orbits of 3 orbiting planets. Specifically, "Using the average of the values of R^3/T^2 that you filled in just for planets c, f, and d in #2, approximately what is the mass of 55 Cancri in kg? planet c = 3.14 x 10^18 planet f = 3.16 x 10^18 planet d = 3.10 x 10^18 Then to convert the mass in kg to solar masses. 2. Relevant equations M=(4pi^2/G)(R^3/T^2) With T equaling the period 3. The attempt at a solution (3.14 x 10^18) + (3.16 x 10^18) + (3.10 x 10^18) / 3 = 7.3 x 10^31 M= (4pi^2/6.67x10^11)(7.3x10^18) = 1.73x10^31 kg Is this correct? Or is this value in another form that I need to convert to kg? And then would it convert to 8.70 Ms (solar masses)? Please help!! Thank you all!!