Answer:
68cm^2
Explanation:
A trapezium is a type of quadrilateral with the two opposite sides parallel.
Area of a trapezium= 1/2(sum of parallel sides)×height
Area of the trapezium= 1/2(5+3)×17
Area of the trapezium= 1/2(8)×17
Area of the trapezium=4×17= 68cm^2