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ΔT = 97 - 27 = 70⁰C
α = 12 x 10⁻⁶ K⁻¹
Lt = ..............?
Penyelesaian :
Lt = L₀ (1 + α • ΔT)
Lt = 2 (1 + 12 x 10⁻⁶ • 70)
Lt = 2 (1 + 0,0084)
Lt = 2 (1,00084)
Lt = 2,00168 m
Jadi, panjang baja akan menjadi 2,00168 m