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This shape is made of 2 cm cubes glued face to face. Its whole surface, including the base, is covered with paper. What area of paper is needed?

Competition practiceDice & Cubes
  • A
  • B
  • C
  • D

Step-by-Step Solution

Seven cubes have faces. There are 8 glued joins, each hiding 2 faces, so faces are on the surface. Each face is . (168 ignores the joins; 26 forgets that each face is )
Answer: C)

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