Find the area of trapezium whose parallel sides are 20 cm and 18 cm long, and the distance between them is 15 cm?
Choices:
A) 288 cm2
B) 277 cm2
C) 285 cm2
D) 276 cm2
E) 287 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?