13
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find the magnitude of the complex number $5-12i$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
13
Find the magnitude of the complex number $5-12i$.
train