Problem: the parameter of a square is equal to the perimeter of a rectangle of length 16 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 ) 47.14 cm', 'c ) 84.92 cm', 'd ) 94.94 cm', 'e ) 23.57 cm']
e