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Question

A cube of edge 5 cm is divided into cubes each of edge 1 cm. The ratio of the total surface area of one of the small cubes to that of the large cube is equal to:


  1. 1:25

  2. 1:125

  3. 1:625

  4. 1:5

  5. 1:3125


Solution

The correct option is A

1:25


Required ratio =6×1×16×5×5=125 = 1:25

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