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A verandah of width \(3 \ m\) is constructed along the outside of a room of length \(9 \ m\) and width \(7 \ m\). Find:
(a) The area of the verandah \(=\) \(m^2\)
(b) The cost of cementing the floor of the verandah at the rate of \(₹15\) per \(sq.m = ₹\)
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