In fig.3, a square OABC is inscribed in a quadrant OPBQ of a circle. If OA = 20cm, find the area of the shaded region (Use π=3.14)
In the given figure, a square OABC is inscribed in a quadrant OPBQ of a circle. If OA = 20 cm, find the area of the shaded region [ Use π = 3.14.]