I now answer but u was a day late sorry
Step-by-step explanation:
7,999,998 is the number you are looking for
A, x equals twenty-three sevenths
You need to find the volume of the coated sphere and then take away the volume of the original sphere.
Volume of sphere = 4 thirds x pi x r cubed
(4 x 3.14 x 12 x 12 x 12) / 3 = 7234.56
(4 x 3.14 x 9 x 9 x 9) / 3 = 3052.08
take away = 4182.48