railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Geometry Circles, Chords and Tangents
If the radius of two circles is 10 cm and 17 cm respectively and the distance between their centres is 21 cm, then find the length of their common chords.
1
16 cm
2
18 cm
3
12 cm
4
15 cm