At what distance about Earth would a satellite have a period of 125 min?
Radius of Earth=6.38*10^6
T=2pi*Square root of (R^3/constant*mass)
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!