Question 263618
We have
{{{m =kr^3}}}
diameter = 2, mass of 9
means
radius = 1 , mass = 9
step 1 - find k.
{{{9 =k(1)^3}}}
so,
k = 9
step 2 - rewrite the equation with our new k to get
 {{{m = 9r^3}}}
step 3 - using m = 4608, find r and then d we get
{{{4608 = 9r^3}}}
dividing, we get
{{{512 = r^3}}}
take a cub root to get
r = 8 and then d = 4
diameter = 4cm