instruction:
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 perimeter of a triangle is 42 cm and the inradius of the triangle is 5.0 cm . what is the area of the triangle ? 
Options: a ) 128 cm 2 , b ) 36.0 cm 2 , c ) 105 cm 2 , d ) 25 cm 2 , e ) 135 cm 2
answer:
c


question:
Problem: find the smallest number that must be added to 1780 to make it a perfect square . 
Options: a ) 17 , b ) 42 , c ) 69 , d ) 47 , e ) 52
answer:
c


question:
Problem: a rectangular field has a length 10 meters more than it is width . if the area of the field is 144 , what is the length ( in meters ) of the rectangular field ? 
Options: a ) 16 , b ) 18 , c ) 20 , d ) 22 , e ) 24
answer:

b