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 cubical block of metal weighs 3 pounds . how much will another cube of the same metal weigh if its sides are twice as long ? 
Options: a ) 48 , b ) 32 , c ) 24 , d ) 18 , e ) 12
[EX A]: c

[EX Q]: Problem: find the perimeter and area of a square of side 19 cm . 
Options: a ) 324 , b ) 361 , c ) 400 , d ) 441 , e ) 484
[EX A]: b

[EX Q]: Problem: a hall is 15 m long and 12 m broad . if the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls , the volume of the hall is : 
Options: a ) 3348 , b ) 3898 , c ) 1200 , d ) 2881 , e ) 7881
[EX A]:
c