Jawabanmu

2014-03-10T19:03:29+07:00
V =  lamda x f
lamda = v / f
          = 75 / 300
          = 0,25 m
6 4 6
2014-03-10T19:04:10+07:00
Panjang gelombang : f / v = 300 Hz / 75 m/s = 0,25 m