Find the area of a trapezium whose parallel sides are 9 cm

$\operatorname{ar}($ trapezium $)=\frac{1}{2} \times($ sum of parallel sides $) \times($ distance between them $)$

$=\frac{1}{2} \times(9+6) \times 8$

= 60 cm2
Hence, the area of the trapezium is 60 cm2.