Question

what is the total surface area of hall for wahite washing .​

Answer 1

We have found that the area of whitewashing is 74 m² and the total cost of whitewashing the walls of the room and the ceiling is ₹555.

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Answer 2

we get the total cost of the whitewashing 4 walls of the room = (112) (Rs. 15) = Rs. 1680.