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 width of a rectangular hall is ½ of its length . if the area of the hall is 128 sq . m , what is the difference between its length and breadth ? 
Options: a ) 8 m , b ) 10 m , c ) 12 m , d ) 15 m , e ) 17 m

A: a
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Q: Problem: the radius of the two circular fields is in the ratio 5 : 4 the area of the first field is what percent greater than the area of the second ? 
Options: a ) 22 % , b ) 32 % , c ) 34 % , d ) 64 % , e ) 36 %

A: d
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Q: Problem: find the area of a rhombus having each side equal to 13 cm and one of whose diagonal is 24 cm . 
Options: ['a ) 150 sq . cm', 'b ) 120 sq . cm', 'c ) 130 sq . cm', 'd ) 125 sq . cm', 'e ) 110 sq . cm']

A:
b
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