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The area of four walls of a room is 120m*m. if the length of room is twice its breadth and the height is 4m . find the area of floor.



Let the breadth be x m so length=2x..so..area of four walls=2(l+b)*h=.>120=6x*4=>120/24=x=>10/2=x=5...so length=>2*5=10m..and breadth=5m..so area of floor=l*b=5*10=50m^2(ans)
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