Find the missing number?

Solution (By Examveda Team)

Starting with the top left segment, and moving clockwise around the circle, numbers follow the sequence of square numbers, from 121 to 256.

11* 11 = 121.
12 * 12 = 144.
13 * 13 = 169.
14 * 14 = 196.
15 * 15 = 225.
16 * 16 = 256.
Missing Element = 196.