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: the supplementary of an angle is thrice its complimentary . find the angle . 
Options: a ) 60 , b ) 45 , c ) 90 , d ) 180 , e ) 120
[A]: b


[Q]: Problem: a circular ground whose diameter is 35 metres , has a 1.4 metre - broad garden around inside of it . what is the area of the garden in square metres ? 
Options: a ) 301.5 , b ) 484.12 , c ) 401.84 , d ) 301.0 , e ) 301.84
[A]: e


[Q]: Problem: how many books each of volume 100 meter cube can be packed into a crate of volume 3000 meter cube ? 
Options: a ) 50 , b ) can not be determined , c ) 150 , d ) 300 , e ) 350
[A]:
b