15 POINTS PLEASE HURRY AND ANSWER I HAVE 4 QUESTIONS LEFT !!

Answer:
7236.86
Step-by-step explanation:
the formula for volume of a sphere is V = 4/3pi(r^3).
(volume equals 4 over 3 times pi times radius to the power of 3)
we know that the radius is 12mm. 12^3 = 1728mm. Now we'll multiply 4/3 by pi.
4/3 x pi = 4.188.
now multiply 4.188 by 1728 and you get 7236.86.
Tell me if this is the right answer.