Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 11 cm.	Choose the correct answer:
A) 335 cm2  B) 209 cm2  C) 285 cm2  D) 825 cm2  E) 725 cm2
Area of a trapezium = 1/2 (sum of parallel sides) * (perpendicular distance between them)   = 1/2 (20 + 18) * (11)   = 209 cm2   Answer: 209 cm2
<result>B</result>
Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 11 cm.