Teaching Rajasthan 3rd Grade REET Mains (Level I & II) Mock Test Quantitative Aptitude Geometry Triangles, Congruence and Similarity
Let △ABC ~ △QPR and \(\frac{{{\rm{ar}}\left( {{\rm{\Delta ABC}}} \right)}}{{{\rm{ar}}\left( {{\rm{\Delta PQR}}} \right)}}\, = \,\frac{{49}}{{144}}\). If AB = 12 cm, BC = 9 cm and AC = 7 cm, then QR (in cm) is equal to:
1
16
2
12
3
19
4
21