Task: Question Answering
Input (English): Problem: calculate the area of a triangle , if the sides are 30 cm , 21 cm and 10 cm , what is its area ? 
Options: a ) 145 cm 2 , b ) 105 cm 2 , c ) 125 cm 2 , d ) 115 cm 2 , e ) 135 cm 2
Output (English): b