The third resonance of an open-closed organ pipe corresponds to 193 Hz on the chromatic musical scale. What is the length of the pipe? Take sound wave velocity to be 343 m/s
Hint: Third resonance in an open one end closed at the other end instrument corresponds to n=2

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

v 154.9= 0.9 length length s little over 154.9cm