Question

A a square oabc is encrypted in a quadrant opbq u of a circle as shown in the figure is O A is equals to 21 find the area of the shaded region​

Answer 1

Answer:

given OA=AB=BC=CO=21cm

In right △OAB,OB2=OA2+AB2

⇒OB=212+212=212cm=radius

∴  area of shaded region = area of quad. OPBQ - area of square

                                                

                                       = 41×πr2−(21×21)

                                   

                                       = 41×722×(212)2−441

∴area of shaded region=252 cm2