The function m (r) = 1978 models the mass in grams of a spherical metal ball as a function of the ball's radius in centimeters.
Enter the inverse model to represent the radius r in centimeters of a spherical metal ball as a function of
the ball's mass m in grams.
The inverse model to represent the radius r (in centimeters) of a spherical metal ball as a function of the
ball's mass m (in grams) is, r(m) =