state gov Allahabad High Court Stenographer 2024 Mock Test Series Quantitative Aptitude Geometry Circles, Chords and Tangents
8 cm and 5 cm are the radii of two circles. If the distance between the centres of the two circles is 11 cm, then the length (in cm) of the common tangent of two circles is:
1
2√7
2
3√7
3
√7
4
4√7