SOLUTION: what is the volume of a ball if its diameter is 11 inches?

Question 339675: what is the volume of a ball if its diameter is 11 inches?
Found 3 solutions by Alan3354, rfer, jim_thompson5910:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
For a sphere,

r = 5.5 inches

Answer by rfer(16322)   (Show Source): You can put this solution on YOUR website!
V=(3.14*11^3)/6
V=4179.34/6
V=696.56 cu in
----------------
V=4/3*3.14*5.5^3
V=4/3*522.4175
V=2089.67/3
V=696.56 cu in
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
If the diameter is , then the radius is inches. So

Start with the volume of a sphere formula.

Plug in .

Replace with (note: Use more digits of to get better accuracy).

Cube to get .

Multiply and to get (this figure is approximate).

Multiply and to get (again, this figure is approximate).

Round to the nearest thousandth.

So the volume of the ball is approximately 696.910 cubic inches.

If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim

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