✨ Best Answer ✨
ここ
https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q10102582305
第１が5cm
第２が17.4cm
17.4-5=12.4cm 半波長
第３が 17.4+12.4=29.8cm
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
助かりました🙇♀️
ありがとうございます！