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 length of a rectangle is halved while its width is also halved . what is the % change in area ?
Options: a ) 25 % , b ) 30 % , c ) 50 % , d ) 65 % , e ) 75 %
[EX A]: e

[EX Q]: Problem: the length of the diagonal of a square is 12 cm . find its area and perimeter .
Options: ['a ) 31.84 cm', 'b ) 33.84 cm', 'c ) 35.84 cm', 'd ) 38.84 cm', 'e ) 38.92 cm']
[EX A]: b

[EX Q]: Problem: a cube of edge 16 cm is immersed completely in a rectangular vessel containing water . if the dimensions of the base of vessel are 20 cm * 15 cm , find the rise in water level ?
Options: a ) 6 cm , b ) 8.25 cm , c ) 13.65 cm , d ) 15.12 cm , e ) 20.62 cm
[EX A]:
c