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SSC MTS 2023 · PYQ · Mensuration · medium

The surface area of a sphere is 616 cm², find its diameter. Take π = 22/7

Answer

The correct answer is D: 14 cm. 4πr² = 616 → r² = 616×7/88 = 49 → r = 7 cm → diameter = 14 cm.

  1. A.3 cm
  2. B.2 cm
  3. C.4 cm
  4. D.14 cm✓ Correct

Explanation

4πr² = 616 → r² = 616×7/88 = 49 → r = 7 cm → diameter = 14 cm.
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