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delta l = 200,4cm - 200cm = 0.4cm
(alpha=delta l per l0 x delta t)
(alpha = 0,4 per 200 x 100)
maaf salah
0.4 =α.200cm.100c
0.4 =α.20000
α =20000/0,4
α =50000
α =
* 0.4 dari (200,4-200)
* Δt=(suhu akhir-suhu awal)
sepertinya jawabanya begitu.. ;)