Problem: the parameter of a square is equal to the perimeter of a rectangle of length 36 cm and breadth 20 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 ) 44.0 , d ) 23.53 , e ) 23.57
c