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A is the starting point. AB = 8 Km (towards west), then BC = 5 Km towards right. From point he turns 270 degree anticlockwise it means he turns left from the north and reaches the point D. 
Now it is clear that he is facing east direction.
The length of a rectangle is 10 cm more than its width. If the perimeter of the rectangle is 40 cm, find the area of the rectangle.
