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: in right triangle abc , ac is the hypotenuse . if ac is 35 and ab + bc = 55 , what is the area of the triangle abc ? 
Options: a ) 225 , b ) 450 , c ) 25 √ 2 , d ) 200 , e ) 200 √ 2
[A]: b


[Q]: Problem: the perimeter of one face of a cube is 40 cm . its volume will be : 
Options: a ) 125 cm 3 , b ) 400 cm 3 , c ) 250 cm 3 , d ) 1000 cm 3 , e ) none of these
[A]: d


[Q]: Problem: the length of a rectangle is halved , while its breadth is tripled . wat isthe % change in area ? 
Options: a ) 40 % , b ) 45 % , c ) 50 % , d ) 60 % , e ) 67 %
[A]:
c