Task: Question Answering
Input (English): Problem: find the area of trapezium whose parallel sides are 20 cm and 18 cm long , and the distance between them is 30 cm ? 
Options: a ) 827 cm 2 , b ) 570 cm 2 , c ) 285 cm 2 , d ) 178 cm 2 , e ) 176 cm 2
Output (English): b