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Railways PYQCBT 1 2016

RRB NTPC · Question 5

Triangle PQR is such that PQ = 9 cm, QR = 6 cm, PR = 7.5 cm, and triangle PQR is similar to triangle XYZ. If XY = 18 cm, find the value of YZ. A. 15 cm B. 18 cm C. 12 cm D. 9 cm

  1. A

  2. C

  3. B

  4. D

Show answer & explanation

Answer: (B) C

Explanation

In similar triangles corresponding sides are in the same ratio. XY/PQ = 18/9 = 2, so YZ = 2 × QR = 2 × 6 = 12 cm.