Points $A, B, C$ and $D$ have these coordinates: $A(3,2)$, $B(3,-2)$, $C(-3,-2)$ and $D(-3,0)$. What is the area of quadrilateral $ABCD$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Points $A, B, C$ and $D$ have these coordinates: $A(3,2)$, $B(3,-2)$, $C(-3,-2)$ and $D(-3,0)$. What is the area of quadrilateral $ABCD$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
18
Points $A, B, C$ and $D$ have these coordinates: $A(3,2)$, $B(3,-2)$, $C(-3,-2)$ and $D(-3,0)$. What is the area of quadrilateral $ABCD$?
train