please answer, i don't know how to solve them. please and thank you


Answer:
C or 260.48
Step-by-step explanation:
Find area of both triangles:
20*16/2/2*2=160
Find area of circle;
pi*r*r/2= area of circle
d/2=r
16/2=8
pi*8*8/2 is about 100.53
160+100.53=260.53