railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Geometry Circles, Chords and Tangents
A pendulum of length 'l' swings through an angle of 45º and describes an arc of length 15.4 cm. Find the value of 'l'.
1
19.6 cm
2
22.2 cm
3
18.4 cm
4
20.6 cm