The radius of a sphere is increased by 10%. What will be the percentage increase in its surface area ?

The radius of a sphere is increased by 10%. What will be the percen

1.	The radius of a sphere is increased by 10%. What will be the percentage increase in its surface area ?
A.	21 %
B.	22 %
C.	23 %
D.	24 %
Answer» B. 22 %

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The radius of a sphere is increased by 10%. What will be the percentage increase in its surface area ?

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