V = [tex] \frac{4}{3} [/tex][tex] \pi [/tex][tex] r^{3} [/tex] is the formula to find the volume of a sphere.
First cube the radius (12)
[tex] 12^{3} [/tex] = 1728
Now multiply 1728 by 4/3 by multiplying it by 4, and then dividing the result by 3.
1728 x 4 = 6912
[tex] \frac{6912}{3} [/tex] = 2304
Now, we multiply this number by [tex] \pi [/tex] to get our final answer.
You typically use 3.14 to approximate [tex] \pi [/tex].
2304 x 3.14 = 7234.56
Therefore, the volume of a sphere with a radius of 12 will be approximately 7234.56
Hope this helps!!
Let me know if there's anything you don't understand and I'll try to explain as best I can.