If the radius of a sphere is increased by 5%, what percentage increase takes place in the surface area of the sphere?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 10.25%.
We have given, in the question,
The radius of a sphere is increased by 5%,
Let's assume percentage increase x = 5%
A percentage increase takes place in the surface area of the sphere = x + x + x2/100
= 5 + 5 + 25/100
= 10.25%