the floor of a rectangular hall has a perimeter 250 meters. if the cost of painting the four walls at the rate of rupees 10 per meter square is rupees 15000, find the height of the hall. [hint : area of the four walls = lateral surface area ]
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Height of rectangular =6m Perimeter =250m
We know that Perimeter of rectangle=2(l+b)= 250
Area of four walls =2(l+b)h We know the value of 2(l+b) Area of four wall=250*6 Area of four wall =1500m^2 Cost of painting =rate *area Cost of painting four walls =20*1500 Cost=30000rs. The floor of a rectangular hall has a perimeter 250 m.
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