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: the parameter of a square is equal to the perimeter of a rectangle of length 18 cm and breadth 14 cm . find the circumference of a semicircle whose diameter is equal to the side of the square . ( round off your answer to two decimal places )
Options: a ) 77.14 cm , b ) 25.14 cm , c ) 84.92 cm , d ) 94.94 cm , e ) 23.57 cm
b

Problem: the value of " a " varies in inverse proportion as the square of " b " . if the value of " a " is equal to 40 when " b " is equal to 12 . what would be the value of " a " when " b " is equal to 24 ?
Options: ['a ) 10', 'b ) 88', 'c ) 26', 'd ) 27', 'e ) 28']
a

Problem: the ratio of the radius of two circles is 2 : 5 , and then the ratio of their areas is ?
Options: a ) 4 : 25 , b ) 2 : 9 , c ) 1 : 9 , d ) 3 : 7 , e ) 3 : 4
a