Question

A room is 3 times as long as its breadth. If cost of carpeting its floor at rs 60 per square meter is Rs 4500 and cost of colouring its four walls at rate of rs 6 per square meter is rs 1104,find the height of the room.​

Answer 1

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Step-by-step explanation:

Area of floor=4500/60=75 m^2

Width =x, Length =3x, Area of the floor =x × 3x=3x^2

3x^2=75 => x^2=25 => x=5 m, Width=5 m

Length=3×5=15 m

Walls area=2(5+15)×4.6=184 m^2

Cost of colouring=184×18=3,312 Ans