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: the slant height of a cone is 12 cm and radius of the base is 4 cm , find the curved surface of the cone .
Options: a ) 33 , b ) 88 , c ) 48 , d ) 77 , e ) 27
[EX A]: c

[EX Q]: Problem: carol and jordan draw rectangles of equal area . if carol ' s rectangle measures 12 inches by 15 inches and jordan ' s rectangle is 6 inches long , how wide is jordan ' s rectangle , in inches ?
Options: ['a ) 24', 'b ) 26', 'c ) 28', 'd ) 30', 'e ) 32']
[EX A]: d

[EX Q]: Problem: the perimeter of an equilateral triangle is 45 . if one of the side is the side of an isoceles triangle of perimeter 40 then what is the lenght of base of isoceles triangle .
Options: a ) 10 units , b ) 20 units , c ) 30 units , d ) 40 units , e ) 15 units
[EX A]:
a