A verandah of width 3 \(m\) is constructed along the outside of a room of length 7 \(m\) and width 3 \(m\). Determine the area of the verandah and the cost of cementing the floor of the verandah at the rate of \(₹ \)15 per sq. m.
The area of the verandah is .
The total cost of cementing the floor of the verandah is \(₹\).