If the radius of a circle is decreased 40%, what happens to the area?  Options.
A) 10% decrease	B) 20% decrease	C) 36% decrease	D) 40% decrease	E) 64% decrease
Area of Square = Pi* radius^2   New Radius = 0.6 * old radius   so new area = (0.6)^2 old area =&gt; 4/25 of old area =&gt; 36% old area   Ans : 64% decrease
<result>E</result>
If the radius of a circle is decreased 40%, what happens to the area?