SOLUTION: I hope I'm in the right section. I have question about determining volume. Here it is: What is the volume of a sphere with a 3-mile radius? V = 4/3 x pi x r3 V = 4/3 x 3.14

Algebra ->  Proportions  -> Lessons -> SOLUTION: I hope I'm in the right section. I have question about determining volume. Here it is: What is the volume of a sphere with a 3-mile radius? V = 4/3 x pi x r3 V = 4/3 x 3.14       Log On


   

Question 62326: I hope I'm in the right section. I have question about determining volume. Here it is:
What is the volume of a sphere with a 3-mile radius?
V = 4/3 x pi x r3
V = 4/3 x 3.14 x 3 (to the third power)
V = 4/3 x 9.42 (to the third power)
V = 12.56 mi (to the third power)
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
While you have the correct formula for the volume of a sphere: V+=+%284%2F3%29%28pi%29r%5E3 your interpretation is a little off. Notice that only the radius, r, is cubed, not the %28pi%29 nor the 4%2F3.
V+=+%284%2F3%29%28pi%29r%5E3 Substitute r = 3 and %28pi%29+=+3.14 Approx.
V+=+%284%2F3%29%283.14%29%283%5E3%29
V+=+%284%2F3%29%283.14%29%2827%29
V+=+%283.14%29%2836%29
V+=+113.04Cubic miles.