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

Problem: in a rectangular metallic piece of paper that covers exactly the area of a cube . the length of the piece of paper is 48 inches and the width is 72 inches . what is the volume of the cube in cubic feet is 1 feet is 12 inches ? 
Options: ['a ) a 8', 'b ) b 22', 'c ) c 27', 'd ) d 40', 'e ) e 51']
a

Problem: the length of a rectangle is halved while its width is also halved . what is the % change in area ? 
Options: a ) 25 % , b ) 30 % , c ) 50 % , d ) 65 % , e ) 75 %
e

Problem: if the sum of a number and its square is 20 , what is the number ? 
Options: a ) 15 , b ) 26 , c ) 28 , d ) 4 , e ) none of these

d