question: The perpendicular height of the cone is 12m.
  
  Hence, find the length of the diameter of the cone's base.
query_wo: Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
  Question: The perpendicular height of the cone is 12m.
  
  Hence, find the length of the diameter of the cone's base.
query_cot: Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
  Question: The perpendicular height of the cone is 12m.
  
  Hence, find the length of the diameter of the cone's base.
question_for_eval: The perpendicular height of the cone is 12m.
  
  Hence, find the length of the diameter of the cone's base.