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: a rectangular block 12 cm by 36 cm by 60 cm is cut into an exact number of equal cubes . find the least possible number of cubes ?
Options: a ) 6 , b ) 10 , c ) 15 , d ) 40 , e ) 22

Answer: c

Question: Problem: if the perimeter of acd is 9 + 3 3 , what is the perimeter of equilateral triangle abc ?
Options: ['a ) 9', 'b ) 18 3 3', 'c ) 18', 'd ) 18 + 3 3', 'e ) 27']

Answer: c

Question: Problem: the sides of a square region , measured to the nearest centimeter , are 7 centimeters long . the least possible value of the actual area of the square region is
Options: ['a ) 42.25 sq cm', 'b ) 45.25 sq cm', 'c ) 43.25 sq cm', 'd ) 50.25 sq cm', 'e ) 52.25 sq cm']

Answer:
a