Find the area of the shaded region:

Question

Answer 1

We know area of semi-circle = πr²/2

Area of shaded region = (π6² - π5²)/2 + (π5²/2 - area( Δ ABC))

= 11π/2 + (25π/2 -  5*5)

= 36π/2 - 25

= 18π - 25