The area of the blue region,Semicircle is inscribed in a rectangle with base=2r&height=r,EC =2
Use of the Pythagoras theorem & angle angle similarly law will be very helpful to solve this
Enjoy the trip & tricks to solve this
Good Luck 🤞
#mathskills #study #allmath #mathstricks #maths #school #trigonometricratios #mathematician #angle #cbse