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  9. Q137

APSC CCE 2023 · Question 137 of 163

The diameters of two given circular plates are respectively 18 cm and 80 cm. The diameter of a plate which has an area equal to the combined area of the two given plates is

Quantitative Aptitude

  1. A98 cm
  2. B40 cm
  3. C41 cm
  4. D82 cmCorrect

Answer: D. 82 cm

Explanation

π(9²+40²) = πR² gives R = 41, so diameter = 82 cm.

Source: APSC CCE Prelims 2023 GS Paper-II, official Series-A key

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