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Railways PYQCBT 1 2016

RRB NTPC · Question 9

A cycle wheel completes 5000 rounds in 44 km. Find the radius of wheels? (π = 22/7) A. 140 cm B. 270 cm C. 70 cm D. 120 cm

  1. A

  2. C

  3. B

  4. D

Show answer & explanation

Answer: (A) A

Explanation

Distance per round = 44 km/5000 = 44,00,000 cm/5000 = 880 cm = 2πr. So r = 880 × 7/(2 × 22) = 140 cm.