the floor of a rectangular hall has perimeter 250m it's height is 5m find the cost of painting it's four walls at the rate of 8per m
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given= Perimeter of floor=250m
height =5m
cost of painting for 1sq.m=8
Area of 4walls =250×5=1250 sq.m
cost of painting 4walls=1250×8=10000
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