Question

the adjoining figure is made up of a triangle inscribed in a semicircle in which AB is 20 CM,BC is 15 cm and angle B is a right angle ,so find the area of the shaded region.

Answer 1

first of all let's find its radius...
AC. ^2=400+225
AC=25
r=25/2
area of shaded region =π(25/4*25/4)-(0.5*20*15)=ans

Answer 2

Answer:

please look attachment