Answer:
45
Step-by-step explanation:
The angle that an arc makes at the center of the circle of which it is a part. One measure of an arc is the angle formed by the arc at the center of the circle that it is a part of. ... (The other is the length of the arc - see Length of an Arc.)
135
the circumfrence of a whole circle is 2pir, so it's 16 pi, that segment is 6
16pi/6pi = 360/x
simplify to: 8/3 = 360/x
8x = 1080
x=135
