Answer:
(E). (33/2)π + 18
Step-by-step explanation:
The reflex angle = 360 - 30 = 330 degrees.
Length of the curved part = (330/360) * 2π*9 = 33π/2.
The length of the straight lines = 9 + 9 = 18
So the required perimeter = 18 + 33π/2
