Answer:
The 3rd option is correct.
The two arcs are proportional: CD = 4EF
Step-by-step explanation:
The complete question together with the diagram for the question is presented in the attached image to this solution.
The length of an arc that subtends an angle of θ degrees at the centre of the circle is given as
L = (θ/360) × 2πr
For both arcs, angle subtended at the centre of the circle is 50°
For the small circle, radius, r = 2 cm
For the big circle, radius, R = 8 cm
CD = (50/360) × 2π × 8
EF = (50/360) × 2π × 2
This shows that the two arcs are proportional and CD = 4 EF.
Hope this Helps!!
