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cube face trick ssc question

A cube of edge 6 cm is painted on all sides and then cut into unit cubes. The number of unit cubes with no sides painted is?
a.    0
b.     64
c.     186

d.    108


  1. The diameter of a roller is 84 cm and its length is 120 cm. It makes 500
    complete revolutions to move once over to a level a playground. Find the area
    of the play ground. ANS 1580 Sq. m

    Explain how ???

    1. Lateral surface area of roller

      Area of play ground
      Convert into sq.m

  2. multiply no of revolution to surface are of roller to find the area of play ground


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