he length, breadth and height of a room are 5m, 4m and 3m respectively. Find the cost of white
washing the walls at the rate of Rs. 7.50 per m2
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Answer:
Total Surface Area to be white washed
=LTA+ Area of the base
=2(l+b)h+lb=2(5+4)×3+5×4m sq
=74m sq
Cost of white washing =Rs.(74×7.50)=Rs.555.
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