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: how many internal diagonals does a hexagon ( 6 sided polygon ) have ? 
Options: a ) 5 , b ) 6 , c ) 8 , d ) 9 , e ) 10
[EX A]: d

[EX Q]: Problem: the slant height of a cone is 35 cm and radius of the base is 14 cm , find the curved surface of the cone . 
Options: ['a ) 4150', 'b ) 1780', 'c ) 1540', 'd ) 1500', 'e ) 6100']
[EX A]:
c