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Three solid spheres of radius 3 cm, 4 cm and 5 cm are melted and recast into a solid sphere. What will be the percentage decrease in the surface area?
  • a)
    12
  • b)
    14
  • c)
    16
  • d)
    28
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Three solid spheres of radius 3 cm, 4 cm and 5 cm are melted and reca...
Volume of larger sphere
Surface area of small spheres = 4π(32 + 42 + 52) = 4π(9 + 16 + 25) = 200π.
Surface area of larger spheres = 4πR2 = 4π × 62 = 144π.
The percentage decrease in the surface area
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Three solid spheres of radius 3 cm, 4 cm and 5 cm are melted and recast into a solid sphere. What will be the percentage decrease in the surface area?a)12b)14c)16d)28Correct answer is option 'D'. Can you explain this answer?
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Three solid spheres of radius 3 cm, 4 cm and 5 cm are melted and recast into a solid sphere. What will be the percentage decrease in the surface area?a)12b)14c)16d)28Correct answer is option 'D'. Can you explain this answer? for CAT 2024 is part of CAT preparation. The Question and answers have been prepared according to the CAT exam syllabus. Information about Three solid spheres of radius 3 cm, 4 cm and 5 cm are melted and recast into a solid sphere. What will be the percentage decrease in the surface area?a)12b)14c)16d)28Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for CAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Three solid spheres of radius 3 cm, 4 cm and 5 cm are melted and recast into a solid sphere. What will be the percentage decrease in the surface area?a)12b)14c)16d)28Correct answer is option 'D'. Can you explain this answer?.
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