Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 15 cm.	Choose the correct option.
A) 225 cm2 B) 275 cm2 C) 285 cm2 D) 315 cm2 E) None of these
Area of a trapezium = 1/2 (sum of parallel sides) * (perpendicular distance between them) = 1/2 (20 + 18) * (15) = 285 cm2   ANSWER:285 cm2
<result>C</result>
Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 15 cm.