The radius of a circle is increased by 1%. Find how much % does its area increases? Choose the correct choice from the following answers.
A) 2.07%	B) 2.71%	C) 2.05%	D) 2.01%	E) 2.02%
r = 100 r = 101   r2 = 10000 r2 = 10201   10000 ---- 201   100 ---- ? =&gt; 2.01%   Answer: 2.01%
<result>D</result>
The radius of a circle is increased by 1%. Find how much % does its area increases?