cube face trick ssc question

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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

3 comments:

  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 ???

    ReplyDelete
    Replies
    1. Lateral surface area of roller
      =2πrh
      =2*22/7*42*120
      =31680sq.cm

      Area of play ground
      =31680*500
      =15840000sq.cm
      Convert sq.cm into sq.m
      =15840000//10000
      =1584sq.m

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

    ReplyDelete

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