The floor of a rectangular has perimeter of 250m and length and breadth are in the ratio of 13:12 . If the cost of painting the four walls and ceiling at the rate of 5per m2 is 27000
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As given perimeter[2(l+b)] is 250
so
Lenght is 65 and breadth is 60
Area of four walls = perimeter×height
= 250×h sqm
Area of ceiling = l×b= 65×60=3900 sqm
ATQ
(250h+3900)×5= 27000
250h=5400
h= 5400/250= 21.6meter
Height of the walls(Room) is 21.6 meter
so
Lenght is 65 and breadth is 60
Area of four walls = perimeter×height
= 250×h sqm
Area of ceiling = l×b= 65×60=3900 sqm
ATQ
(250h+3900)×5= 27000
250h=5400
h= 5400/250= 21.6meter
Height of the walls(Room) is 21.6 meter
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