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The floor of a rectangular hall has a perimeter of 250m. If it's height is 6m. Find the cost of painting its four walls at the rate of Rs.20 per m square.



Height of rectangular =6m Perimeter =250m We know that Perimeter of rectangle=2(l+b) 250=2(l+b) 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
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