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Railways PYQCBT 1 2016

RRB NTPC · Question 42

The diagonals of 2 squares M and N are in the ratio 2 ∶ 1. The ratio of their areas is A. 1 ∶ 2 B. 2 ∶ 1 C. 1 ∶ 4 D. 4 ∶ 1

  1. C

  2. A

  3. D

  4. B

Show answer & explanation

Answer: (C) D

Explanation

The area of a square = (diagonal)²/2, so areas are in the ratio of the squares of the diagonals: 2² : 1² = 4 : 1.