1. The problem statement, all variables and given/known data At what distance about Earth would a satellite have a period of 125 min? G=6.673x10^-11 T=125 Min Mass=5.97x10^24 Radius of Earth=6.38*10^6 2. Relevant equations T=2pi*Square root of (R^3/constant*mass) 3. The attempt at a solution 125=2*3.14*Square root of ((6.38x10^6)^3+R^3/6.673x10^-11*5.97x10^24) I got a negative #.... Which i know is wrong!