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A cube of edge 12 cm is cut into small cubes of edge 3 cm. By what percent does the total surface area increase?

Competition practiceMensuration
  • A400%
  • B200%
  • C75%
  • D300%

Step-by-Step Solution

64 cubes of TSA 54 each: vs original . Increase .
Answer: D) 300%

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