V =



is the formula to find the volume of a sphere.
First cube the radius (12)

= 1728
Now multiply 1728 by 4/3 by multiplying it by 4, and then dividing the result by 3.
1728 x 4 = 6912

= 2304
Now, we multiply this number by

to get our final answer.
You typically use 3.14 to approximate

.
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.