Please Help Gracias

The easiest way to see this is with a graph :

We have a TRAPEZOID here, Nick......the area  =

(1/2) height * ( sum of the base lengths)  =

(1/2) AB * ( AD + BC)  =

(!/2) (6) ( 5 + 9)  =

(1/2)(6) ( 14) =

3 * 14  =

42 units^2

Does this make sense ???