The numerical value of a particular square's area is equal to the numerical value of its perimeter. What is the length of a side of the square?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The numerical value of a particular square's area is equal to the numerical value of its perimeter. What is the length of a side of the square?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
4\text{ units}
The numerical value of a particular square's area is equal to the numerical value of its perimeter. What is the length of a side of the square?
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