A particular cubic box has edge length two inches. If the box has no top, what is the external surface area of the box?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A particular cubic box has edge length two inches. If the box has no top, what is the external surface area of the box?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
A particular cubic box has edge length two inches. If the box has no top, what is the external surface area of the box?
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