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The inner and outer surface areas of a spherical shell are 324 πcm2 and 576 πcm2. What is the thickness of the shell?
  • a)
    6 cm
  • b)
    3 cm
  • c)
    2 cm
  • d)
    4 cm
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The inner and outer surface areas of a spherical shell are 324 πcm2...
Inner surface Area = 4πr2 = 324π cm2

∴ Outer radius

∴ thickness of the shell = (12 - 9) = 3 cm
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