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Ratio of a sphere

  1. Mar 19, 2009 #1
    Plz help me on this problem:

    THe diameter of a certain sphere is 2 times the diameter of a second sphere.

    B what is the ratio of their areas?
    C. What is the ratio of their volumes?

    I try to put 1 and 2 as a diameter of the sphere then compare its areas and volumes but I'm not sure if the ratio is a 100% correct. Plz help me on this.
     
  2. jcsd
  3. Mar 19, 2009 #2

    Mark44

    Staff: Mentor

    What did you get for spheres of diameter 1 and 2?

    What do you get for spheres of diameter d and 2d?
     
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