What is the percentage increase in the volume of sphere when its surface area is increased by 21 %?

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(Last Updated On: January 21, 2020)

Problem Statement: ECE Board November 1992

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

• A. 5%
• B. 10%
• C. 21%
• D. 33%

Problem Answer:

The percentage increase in its volume is 33%.

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