TS ICET 23 May 2019 Shift 1 Paper

Question : 108 of 200

Marks: +1, -0

If the radius of a circle is increased by 10%, then the percent increase in its area is

Solution:

Let the radius of the circle be 10.
⇒ New radius of the circle = 11
The required percentage increase in the area

={12π-100π}/{100π}×100%=21%

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