Describe the likelihood that a point chosen inside the circle will also be inside the hexagon? o certain O likely O unlikely o impossible

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Can someone me with these two circle theorem questions asap?