We must remember the equation to find the area of a trapezoid first.
Area =

A and B are the bases (6 and 12)
The height is 6 for each trapezoid
Now Solve!
====================================================================
SOLVING...
Area =

Area =

Area = 9 * 6
Area = 54
Since there are two trapezoids, multiply 54 by 2
54 x 2 = 108
Area = 108