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Railways PYQCBT 2 2017

RRB NTPC · Question 69

The areas of two similar triangles are 121 sq.m and 64 sq.m. If the median of the 1^st triangle = 12.1 m, then the median of the 2^nd triangle will be

  1. 6.4 m

  2. 8.4 m

  3. 8.8 m

  4. 9.2 m

Show answer & explanation

Answer: (C) 8.8 m

Explanation

For similar triangles, corresponding medians are in the ratio of the sides, i.e. √121 : √64 = 11 : 8. So the second median = 12.1 × 8/11 = 8.8 m.