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: 34 . the side surface of a cylinder is rolled with a rectangle . if the height of a cylinder is 16 feet and the perimeter of the circular base . is 12 feet , what is the diagonal of the rectangle ? 
Options: ['a ) 16', 'b ) 20', 'c ) 18', 'd ) 22', 'e ) 21']
[A]: b


[Q]: Problem: the diagonal of a rhombus are 65 m and 60 m . its area is : 
Options: a ) 1940 , b ) 1950 , c ) 1960 , d ) 1990 , e ) 1980
[A]: b


[Q]: Problem: the area of a square field is 625 km 2 . how long will it take for a horse to run around at the speed of 25 km / h ? 
Options: a ) 12 h , b ) 10 h , c ) 8 h , d ) 4 h , e ) none of these
[A]:
d