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  9. Q83

RRB NTPC 2022 · Question 83 of 110

A circular racing track has been developed in a field. If the difference between the outer circumference and the inner circumference of the racing track is 33 m, then find the width of the track (in m). (Use π = 22/7)

  1. A5(1/4)Correct
  2. B5(3/4)
  3. C5(1/4)
  4. D4(3/4)

Answer: A. 5(1/4)

Explanation

Let the Width of the track =r₁ – r₂. Difference between the outer circumference and the inner circumference=33m. 2πr – 2π r₂ = 33m 2π(r₁ – r₂) = 33 (r₁ – r₂) =21/4 =5(1/4).

Source: RRB NTPC 2022 CBT 2 Previous Year Paper (12-June-2022) — ixambee compilation with answer key · reliable-secondary

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