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

[Q]: Problem: if the area of a circle decreases by 30 % , then the radius of a circle decreases by 
Options: a ) 20 % , b ) 16 % , c ) 36 % , d ) 64 % , e ) none of these
[A]: b


[Q]: Problem: danny is sitting on a rectangular box . the area of the front face of the box is half the area of the top face , and the area of the top face is 1.5 times the area of the side face . if the volume of the box is 1536 , what is the area of the side face of the box ? 
Options: a ) 34 , b ) 65 , c ) 88 , d ) 90 , e ) 128
[A]: e


[Q]: Problem: 62 small identical cubes are used to form a large cube . how many more cubes are needed to add one top layer of small cube all over the surface of the large cube ? 
Options: a ) 64 , b ) 128 , c ) 152 , d ) 154 , e ) 256
[A]:
d