nd the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 14 cm?  Choose the correct choice from the following choices
A) 235 cm 2 B) 260 cm 2 C) 266 cm 2 D) 270 cm 2 E) 280 cm 2

Rationale: "area of a trapezium = 1 / 2 ( sum of parallel sides ) * ( perpendicular distance between them ) = 1 / 2 ( 20 + 18 ) * ( 14 ) = 266 cm 2 answer : c"
Answer: C