Answer by
Vanasatchy (816)

people should know the weight of an object varies from planet to planet and also differs to the elevation of the objectSo the weight is w=cr c is constant and r is distance. W = C/r^2
Multiply by r^2:
Wr^2 = C
divide by W:
r^2 = C/W
Square root:
r = sqrt(C/W