railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Geometry Circles, Chords and Tangents
In the circle below, chord \(\overline {AB} \) is extended to meet the tangent \(\overline {DE}\) at D. If \(\overline {AB} \; = \;5\;cm\) and \(\overline {DE} \; = \;6\;cm,\) find the length of \(\overline {BD} \).
1
6 cm
2
√30 cm
3
4 cm
4
5 cm