Mathematics The surface area of a cube of dimensions  n×n×n is painted and it cut into n cubes of equal length (1 unit), then number of 2 faces painted cubes are  

 

The surface area of a cube of dimensions  n×n×n is painted and it cut into n cubes of equal length (1 unit), then number of 2 faces painted cubes are

 

 

  1. A

    8 n2

     
  2. B

    6 n2

     
  3. C

    12 n2

     
  4. D

    4 n2

     

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    Solution:

     

    Surface area of cube of dimension

    n×n×n

    are painted

    Number of 2 faces painted cubes

    =12 n2

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