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Railways PYQCBT 2 2017

RRB NTPC · Question 21

The midpoints of the sides of an equilateral triangle PQR are X, Y and Z if the perimeter of triangle PQR is 24 cm, then what is the perimeter of triangle XYZ?.

  1. 96 cm

  2. 36 cm

  3. 12 cm

  4. 48 cm

Show answer & explanation

Answer: (C) 12 cm

Explanation

By the midpoint theorem, each side of triangle XYZ is half a side of PQR. So its perimeter is half of 24 = 12 cm.