A ball has a diameter of 20inches what is the volume of the ball give your answer to the nearest cubic inch

Question

I would like to know the answer for this math problem because I've tried and I kept getting another answer than my teacher answer•

Answer 1

The volume of a sphere is ⁴/₃Πr³ 

 

If the diameter is 20 then the radius is 10.

 

So your formula is ⁴/₃ * 3.14 * 10³