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 area of the largest circle that can be drawn inside a square of side 70 cm in length is :
Options: ['a ) 3600', 'b ) 2646', 'c ) 3850', 'd ) 4215', 'e ) 5205']
c

Problem: approximately how many cubic feet of water are needed to fill a circular swimming pool that is 100 feet across and 4 feet deep ?
Options: a ) 15000 , b ) 30000 , c ) 50000 , d ) 70000 , e ) 90000
b

Problem: what is the smallest positive integer x such that 108 x is the cube of a positive integer ?
Options: a ) 2 , b ) 4 , c ) 8 , d ) 10 , e ) 7
a