Solution: What is the percentage increase in its diameter?

(Last Updated On: January 21, 2020)

What is the percentage increase in its diameter when the surface area of a sphere increases?

Problem Statement: ECE Board November 1992

Given a sphere of a diameter, d. What is the percentage increase in its diameter when the surface area increases by 21%?

  • A. 5%
  • B. 10%
  • C. 21%
  • D. 33%

Problem Answer:

The percentage increase in its diameter is 10%.

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Solution: What is the percentage increase in its diameter?

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