In a building there are 5 rooms.Each having a equal area .The length of the room is 4m and breadht is 5
m.The height of the rooms are 2m.If 17 bricks are needed to make a square meter then how many bricks are
needed to make the floor of a particular room?
a)320 b)380 c)340 d)300

• ans-c)340
  as area of floor =area of wall=4*5=20 sq m
  1 sq m= 17 bricks
  then 20 sq m =20*17=340 bricks
  
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• c.340
  area of a wall* 17
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• l*b=20meter suare
  so,
  17*20=340
  
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• area=4*5=20
  bricks required=20*17=340
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• Area of room 4m * 5m=20 m^2
  1sq met = 17 brick
  20 sq met = 17 * 20 brick = 340 bricks
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