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: the side of a rhombus is 24 m and length of one of its diagonals is 18 m . the area of the rhombus is ? 
Options: a ) 410.47 , b ) 403.47 , c ) 420.47 , d ) 400.47 , e ) 300.47
d

Problem: find the surface area of a 8 cm x 4 cm x 2 cm brick . 
Options: a ) 136 cu cm , b ) 112 cu cm , c ) 164 cu cm , d ) 180 cu cm , e ) none
b

Problem: the area of a right triangle pcm is 18 . length of smallest side cm is 3 units . find the length of the other two sides . 
Options: ['a ) 12 , 9', 'b ) 18 , 3', 'c ) 15.16 , 6', 'd ) 12 , 12.37', 'e ) 12 , 15.16']

d