Final answer:
The area of the trapezoid is 27 square units.
Step-by-step explanation:
The formula for the area of a trapezoid is A = (1/2)(b1 + b2)h, where b1 and b2 are the lengths of the bases and h is the height.
In this case, the base lengths are 3 and 6, and the height is 8. Plugging these values into the formula, we get A = (1/2)(3 + 6)(8) = 27 square units.