the perimeter of a floor of a rectangular hall is 60m and its height is 3m . find the cost of painting it's four walls at the rate of 20rupees/permsq. give answer with solution
the perimeter of a floor of a rectangular hall is 60m and its height is 3m . find the cost of painting it's four walls at the rate of 20rupees/permsq. give answer with solution
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