context: The size of a musical instrument can be different, depending on the height and length of the hands playing on it. For children it is from 25 cm to 30 cm, and for adults - from 72 cm to 86 cm. The length of the tube is also adjusted according to the growth of the owner. The length is considered acceptable if you could close the bottom hole on the pipe with your palm or fingers. Therefore, the length of the flute should not exceed the size of the outstretched arm from the shoulder to the tips of the fingers. The body of the kalyuki has a conical shaped passage, slightly tapering from top to bottom. The inner diameter of the tubes is from 15 to 25 mm. The diameter of the outlet does not exceed 12-14 mm, and the top hole - 19-23 mm.
question: What is the length of the flute?
answers.text: from 72 cm to 86 cm