In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Problem: obra drove 200 π meters along a circular track . if the area enclosed by the circular track on which she drove is 57,600 π square meters , what percentage of the circular track did obra drive ? 
Options: a ) 6.67 % , b ) 12.5 % , c ) 41.66 % , d ) 25 % , e ) 33.3 %
c

Problem: what is the area of square field whose side of length 17 m ? 
Options: a ) 225 , b ) 777 , c ) 266 , d ) 289 , e ) 261
d

Problem: if the length of the longest chord of a certain circle is 20 , what is the radius of that certain circle ? 
Options: a ) 2.5 , b ) 5 , c ) 10 , d ) 15 , e ) 20

c