railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Geometry Circles, Chords and Tangents
A secant PAB is drawn from an external point P to the circle with centre O, intersecting it at A and B. If OP = 17 cm, PA = 8 cm and PB = 21 cm, then the radius of the circle is:
1
10 cm
2
12 cm
3
11 cm
4
15 cm