MathematicsThe base radii of two right circular cones of the same height are in the ratio 3:5. Find the ratio of their volumes.

The base radii of two right circular cones of the same height are in the ratio 3:5. Find the ratio of their volumes.

  1. A
    9 : 25
  2. B
    8 : 25
  3. C
    9 : 10
  4. D
    10 : 25 

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    Solution:

    Let    and    be the radii of two cones and   be their volumes. Let h be the height of the two cones . Then,
    Therefore,
    We have the ratio of the volumes of two cones is 9 : 25.(option1)
    So, Option 1 is correct.
     
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