Q. 95.0( 1 Vote )

The length and breadth of a room are in a ratio 3 : 2. The cost of carpeting the room at Rs 25 per m2 is Rs 1350 and the cost of papering the four walls at Rs 15 per m2 is Rs 2580. If one door and two windows occupy 8m2, find the dimensions of the room.

Answer :

Area of the floor


Given that length and breadth are in ratio 3:2, so l = 3x and b = 2x


l= 9 m and b =6 m


Lateral surface area of a cuboid = 2(Length +Breadth) ×Height


Lateral surface area


Adding door and window, Lateral surface area = 180 m2



h = 6 m


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