What is the perimeter of the polygon formed when the points $A(-6,6), B(9,6)$ and $C(9,-2)$ are graphed and connected with straight lines?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the perimeter of the polygon formed when the points $A(-6,6), B(9,6)$ and $C(9,-2)$ are graphed and connected with straight lines?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
40
What is the perimeter of the polygon formed when the points $A(-6,6), B(9,6)$ and $C(9,-2)$ are graphed and connected with straight lines?
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