Problem: the parameter of a square is equal to the perimeter of a rectangle of length 14 cm and breadth 10 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 ) 23.56 , b ) 23.59 , c ) 23.55 , d ) 18.86 , e ) 23.57
d