Obra drove 200π meters along a circular track. If the area enclosed by the circular track on which she drove is 57,600π square meters, what percentage of the circular track did Obra drive?	Choices
A) 6.67%	B) 12.5%	C) 41.66%	D) 25%	E) 33.3%
area enclosed by the circular track on which she drove is 57,600π square meters   So, π(r^2) = 57,600π ---&gt; (r^2)=57,600 ---&gt; r=240   41.66%ircumference of the circular track = 2πr = 480π   Therefore, part of circumference covered = 200π/480π =41.66%   Hence, answer is 41.66%.
<result>C</result>
Obra drove 200π meters along a circular track. If the area enclosed by the circular track on which she drove is 57,600π square meters, what percentage of the circular track did Obra drive?