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 bases of a hemisphere and a cone are equal . if their heights are also equal then ratio between their curved surface area is — 
Options: ['a ) 1 : √ 2', 'b ) √ 2 ∶ 1', 'c ) 1 : 2', 'd ) 2 : 1', 'e ) none of these']
[A]: b


[Q]: Problem: a metallic sheet is of rectangular shape with dimensions 48 m x 36 m . from each of its corners , a square is cut off so as to make an open box . if the length of the square is 3 m , the volume of the box ( in m 3 ) is : 
Options: a ) 3780 , b ) 5120 , c ) 6420 , d ) 8960 , e ) 7960
[A]: a


[Q]: Problem: the perimeter of a triangle is 48 cm and the inradius of the triangle is 2.5 cm . what is the area of the triangle ? 
Options: a ) 87 cm 2 , b ) 28 cm 2 , c ) 98 cm 2 , d ) 26 cm 2 , e ) 60 cm 2
[A]:
e