SSC_CPO_Similar_09_Dec_2025_S2_Q109

Question:

A solid metallic sphere of diameter 14 cm is melted and recast into smaller hemispheres each of diameter 7 cm. How many hemispheres can be made?

14 cm व्यास वाले एक ठोस गोले को पिघलाकर 7 cm व्यास वाले छोटे अर्धगोले बनाए जाते हैं। कितने अर्धगोले बनाए जा सकते हैं?

Options:

  • a) 16
  • b) 17
  • c) 18
  • d) 19
  • a) 16
  • b) 17
  • c) 18
  • d) 19

correct answer : a)

Explanation:

N = [4/3 * π * 7³] / [2/3 * π * 3.5³] = 2 * (7/3.5)³ = 2 * 8 = 16.

N = [4/3 * π * 7³] / [2/3 * π * 3.5³] = 2 * (7/3.5)³ = 2 * 8 = 16.

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