The length,breadth and the height of a
room are 5m,4m,3m respectively . Find the cost of white washing the walls of
the room and ceiling at the rate of ₹7.50 per square metre
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Area of white washing is 2(5*3+4*3)+5*4=74
Cost of white washing is 74*7.50=555
Cost of white washing is 74*7.50=555
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