What is the area of the figure b1 6cm b2 6cm h3 1/2

A (2.5)(1.5)
B(3)(2)
C2(2.5)(1.5)
D1/2(2.5)(1.5)

if it's a trapezoid, then (b1 + b2)/2 * h3

otherwise, maybe a bit more details is in order.