A chord AB is at a distance of 5 cm from the centre of the circle with a diameter of 26 cm. Another chord CD intersects with chord AB at E, such that AE ∶ EB = 5 ∶ 1 and CE ∶ ED = 4 ∶ 1. Find the length of the CD.
1
5√5 cm
2
10√5 cm
3
15√5 cm
4
20√5 cm