13 3/39 is too big, it's greater than 9, so that one is out.
16 is an integer, so that one is out too. 99/6 = 16.5, which is greater than 9, so it can't be right
So the answer is the other 3
Answer:
Step-by-step explanation:
Since, by the SAS formula of finding the area of triangle,
The area of triangle, 
Where,
and
are adjacent sides and
is the included angle of these sides
Here,
And, 
Thus, the area of the triangle ABC,



Therefore, Third Option is correct.
Step-by-step explanation:
By Intersecting Chord Theorem,
5 * x = 10 * 4.
Hence, x = 8.