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Math Help - Volume & Surface Area

  1. #1
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    Volume & Surface Area

    How would I solve this problem?

    You were asked to design a sphere with a volume of 128cm3. What should the diameter of the sphere be?



    Thanks.
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  2. #2
    Super Member craig's Avatar
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    Quote Originally Posted by andi01 View Post
    How would I solve this problem?

    You were asked to design a sphere with a volume of 128cm3. What should the diameter of the sphere be?
    Thanks.
    Hi andi.

    The volume of a sphere is found by the formula V = \frac{4}{3}\pi r^3 where r is the radius of the sphere. Remember, radius is twice the diameter.

    Therefore we get:

    128 = \frac{4}{3}\pi r^3

    r^3 = \frac{96}{\pi}

    I'm sure you can work this out now
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