In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

[EX 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
[EX A]: a

[EX Q]: Problem: the perimeter of an isosceles right triangle is 10 + 10 sq rt 2 . what is the length of the hypotenuse of the triangle ? 
Options: a ) 5 , b ) 6 , c ) 7.07 , d ) 8 , e ) 9
[EX A]: c

[EX Q]: Problem: a semicircle has a radius of 20 . what is the approximate perimeter of the semicircle ? 
Options: a ) 50 , b ) 25 , c ) 86 , d ) 75 , e ) 102
[EX A]:
e