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

[EX Q]: Problem: carol and jordan draw rectangles of equal area . if carol ' s rectangle measures 15 inches by 20 inches and jordan ' s rectangle is 6 inches long , how wide is jordan ' s rectangle , in inches ? 
Options: a ) 20 , b ) 30 , c ) 40 , d ) 50 , e ) 60
[EX A]: d

[EX Q]: Problem: the area of a square is equal to five times the area of a rectangle of dimensions 50 cm * 10 cm . what is the perimeter of the square ? 
Options: a ) 289 cm , b ) 200 cm , c ) 829 cm , d ) 288 cm , e ) 289 cm
[EX A]: b

[EX Q]: Problem: the slant height of a cone is 15 cm and radius of the base is 3 cm , find the curved surface of the cone ? 
Options: a ) 26 , b ) 134 , c ) 141 , d ) 190 , e ) 28
[EX A]:
c