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: if g is the smallest positive integer such that 3150 multiplied by g is the square of an integer , then g must be
Options: a ) 2 , b ) 5 , c ) 6 , d ) 7 , e ) 14
[EX A]: e

[EX Q]: Problem: a rectangular courtyard 3.78 meters long 5.25 meters wide is to be paved exactly with square tiles , all of the same size . what is the largest size of the tile which could be used for the purpose ?
Options: ['a ) 14 cms', 'b ) 21 cms', 'c ) 42 cms', 'd ) none of these', 'e ) 56 cms']
[EX A]: b

[EX Q]: Problem: the surface area of a sphere is 4 r 2 , where r is the radius of the sphere . if the area of the base of a hemisphere is 3 , what is the surface area q of that hemisphere ?
Options: a ) 6 / , b ) 9 / , c ) 6 , d ) 9 , e ) 12
[EX A]:
d