Q. 4. A verandah of width is constructed all along outside a room which is long and wide. Find:
(i) the area of the verandah.
It is given that room is long and wide.
It is clear that it is rectangular shaped with
We know that the area of the rectangle is
-(i)
Now, when verandah of width is constructed all along outside the room then length and breadth of the room is
Area of the room after verandah of width is constructed
-(ii)
Area of verandah is (ii) - (i)
Therefore, the area of the verandah is