the perimeter of a floor of a rectangular hall is 16 m and height is 3 M find the cost of painting its four walls at the rate of rupees 20 per metre square
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area to be painted is lateral surface area of room = 2 (l+b)h
perimeter =2 (l+b)
area to be painted is =16×3=48m2
cost of painting for walls is 48×20=960 rs
this may help u
perimeter =2 (l+b)
area to be painted is =16×3=48m2
cost of painting for walls is 48×20=960 rs
this may help u
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