Two parallel chords are drawn in a circle of diameter 30 cm. The length of one chord is 24 cm and the distance between two chords is 21 cm. The length of the other chord is?
Answer & explanation
Correct answer: option 4
Use triplets = 9, 12, 15
In Δ AEO
EO = 9 cm
EF = 21 cm (given)
So, OF = 21 - 9 = 12cm
Therefore, In Δ CFO
CF = 9 cm (again using triplets 9, 12, 15)
CD = 9 × 2 = 18 cm