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Question 58Asked in RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)

A solid sphere is melted and recast into 18 identical cones, each having a base radius

A solid sphere is melted and recast into 18 identical cones, each having a base radius of 3 cm and height of 18 cm. Find the radius of the sphere.
  1. A9 cm
  2. B10 cm
  3. C7 cm
  4. D8 cm
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Correct answer: (A) 9 cm

From RRB JE CBT-1 PYQ 20 Feb 2026, Shift 2 (12:45 PM)

This is question 58 of RRB JE CBT-1 PYQ 20 Feb 2026, Shift 2 (12:45 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.