MathematicsThe volume of cube is  729 m 3   . Length of its side in m.

The volume of cube is  729 m 3   . Length of its side in m.


  1. A
     10
  2. B
    8
  3. C
    5
  4. D
     9 

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    Solution:

    Let side of a cube = x m
    Volume of given cube is = 729 m 3  
    But we know that the volume of a cube is given as  (side) 3   .
    IMG_256
    Therefore from above we have
    Volumeofcube= side 3  
    side= Volumeofcube 3  
    Substituting value of volume in above formula, we have,
    Sideofcube= 3×3×3×3×3×3 3 Sideofcube=3×3 Sideofcube=9  
    Hence, from above we see that side a cube having volume  729   is  9  .
    So, option 4 is correct.
     
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