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 answer:
A) 827 cm2 B) 216 cm2 C) 285 cm2 D) 178 cm2 E) 176 cm2
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?