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SSC PYQTier 1 2025

SSC CGL – Combined Graduate Level Examination · Question 71

An annular (ring-shaped) disc has outer and inner radii of 12 cm and 8 cm. What percentage of the full circle is this ring?

  1. 44.44%
  2. 55.56%
  3. 66.67%
  4. 77.78%
Show answer & explanation

Answer: (B) 55.56%

Explanation

(144 − 64)/144 = 55.56%.