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: what is the smallest positive integer nn such that 6,480 ∗ n √ 6,480 ∗ n is a perfect cube ? 
Options: a ) 5 , b ) 5 ^ 2 , c ) 30 , d ) 30 ^ 2 , e ) 30 ^ 4
[A]: e


[Q]: Problem: what is the measure of the radius of the circle that circumscribes a triangle whose sides measure 11 , 60 and 61 ? 
Options: a ) 6.5 , b ) 12.5 , c ) 28 , d ) 30.5 , e ) 40
[A]: d


[Q]: Problem: there are 7 non - collinear points . how many triangles can be drawn by joining these points ? 
Options: a ) 22 , b ) 38 , c ) 35 , d ) 29 , e ) 18
[A]:
c