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Question

Walls of the room of dimension 12x10x10 feet is to be painted. Find the area to be painted.

  1. 800
  2. 490
  3. 680
  4. 360

The correct answer is: 680


    Area to be painted = Lateral surface area of cuboid = 2( bh+hl)
    L=12, b= 10, h = 10
    =2(lb + bh + hl)
    =2(12*10 + 10*10 +12*10)
    =2(120 + 100 + 120)
    =2(340)
    =680

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