If the radius of a circle is increased by 50% then the area is increased by:  Choose one:
A) 44%
B) 125%
C) 144%
D) 40%
E) None of the above
initially A=pi*r2   now R2=150/100r   then area=Pi*(150R/100)2   area=225R/100   that is area increases from 100 to 225=increase in area=125%   ANSWER:125%
<result>B</result>
If the radius of a circle is increased by 50% then the area is increased by: