In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
--------
Question: Problem: the parameter of a square is equal to the perimeter of a rectangle of length 40 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 ) 47.14 , b ) 45.15 , c ) 43.23 , d ) 41.44 , e ) 41.51

Answer: a

Question: Problem: if the radius of a circle is increased by 40 % then the area is increased by :
Options: a ) 44 % , b ) 120 % , c ) 96 % , d ) 40 % , e ) none of the above

Answer: c

Question: Problem: a rectangular block 12 cm by 20 cm by 36 cm is cut into an exact number of equal cubes . find the least possible number of cubes ?
Options: a ) 135 , b ) 10 , c ) 15 , d ) 40 , e ) 22

Answer:
a