If the radius of a circle is decreased 50%, what happens to the area? Choose the correct choice from the following.
A) 10% decrease
B) 20% decrease
C) 75% decrease
D) 40% decrease
E) 50% decrease
Area of Square = Pi* radius^2   New Radius = 0.5 * old radius   so new area = (0.5)^2 old area =&gt; 0.25 of old area =&gt; 25% old area   Ans : 75% decrease
<result>C</result>
If the radius of a circle is decreased 50%, what happens to the area?