10. how many cubic inches of material do you need to make a solid rubber ball with a diameter of 3 in.? round your answer to two decimal places.

What is asked in the problem is simply the volume of the solid rubber ball. The volume of sphere given the diameter may be calculated by,
  
                               V = πd^3 / 6

Substituting the given value of diameter, 
 
                               V = (π x 3³) / 6 = 9π/2 or 14.14

Thus, one needs approximately 14.14 in³ of material. 

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