Joey has a beach ball with a radius of 20 cm. What volume of air will it hold when fully inflated?

Question

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Answer 1

May I suggest a "slight" correction to the precedent answer? To calculate the volume of a sphere of radius r, the formula is V = 4/3 * π * r³ cm³ so the volume of the ball of radius 20cm would be 4/3 * π * (20)³ cm³ or 83,775.804 cm³

 

Sources include Wikipedia, Schaum's Technical Mathematics by Paul Calter, p179, Basic Technical Mathematics by Allyn J. Washington, Appendix A-23, or Holt's Geometry by Burger, Chard, et al, P 714, Example 10.8, and a "few" others.

 

Just a correction. Everyone (including myself) can make mistakes.

 

Regards,

 

Dr. Sylvain B.

Answer 2

The volume of a sphere is:

 

Volume = pi*radius³

 

Where:

• pi = 3.14159
• radius = 20 cm

 

Plug in those values for pi and radius into the volume equation to get the answer,