Explanation:
what is the question ?
without an actual question I can only "daydream" things about this information.
EB is the diameter, FB is therefore the radius.
since FB = 3 units, EB = 2×FB = 2×3 = 6 units.
the arc angle AB = 120°.
if you need to express the angle in radians, remember :
360° (the full circle) = 2pi
120° = 360/3 = 2pi/3
the arc angle AE is the supplementary angle to AB (both together have 180° or 2pi/2 = pi).
180 = AB + AE = 120 + AE
AE = 180 - 120 = 60°
60° = 360/6 = 2pi/6 = pi/3
the arc angle BC = 45°.
45° = 360/8 = 2pi/8 = pi/4
the arc angle CD = 30°
30° = 360/12 = 2pi/12 = pi/6
the arc angle ED is the supplementary angle to BC and CD.
180 = ED + BC + CD = ED + 45 + 30 = ED + 75
ED = 180 - 75 = 105°
105° = pi - pi/4 - pi/6 = 12pi/12 - 3pi/12 - 2pi/12 = 7pi/12
the sum of
AB + BC + CD = 2pi/3 + pi/4 + pi/6 =
= 4×2pi/12 + 3pi/12 + 2pi/12 =
= 8pi/12 + 3pi/12 + 2pi/12 = 13pi/12
so, nothing fits to any of your answers.
again, I am not sure what problem you need to solve here.
maybe you can build your answer out of the various pieces I gave you here.