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: a rectangular cube has sides measuring 3 inches long by 2 inches wide by 0.5 inches high . if the surface area of the rectangle is the same as a cube , what do the sides / walls of the cube measure ? round to the nearest whole number . 
Options: ['a ) 4', 'b ) 5', 'c ) 6', 'd ) 7', 'e ) 2']
e

Problem: a perfect square is defined as the square of an integer and a perfect cube is defined as the cube of an integer . how many positive integers n are there such that n is less than 1,000 and at the same time n is a perfect square and a perfect cube ? 
Options: a ) 2 , b ) 3 , c ) 4 , d ) 5 , e ) 6
b

Problem: an error 2 % in excess is made while measuring the side ofa square . the % of error in the calculated area of the square is ? 
Options: ['a ) 4 %', 'b ) 4.04 %', 'c ) 4.23 %', 'd ) 4.56 %', 'e ) 5 %']

b