Jawabanmu

2014-02-25T22:36:20+07:00
Lt = Lo(1+α.Δt)
Lt = 80 ( 1+0,000017.50)
Lt = 80 (1+0,00085)
Lt = 80 (1,00085)
Lt = 80,068


Pertambahan panjang (ΔL) = Lt - Lo = 80,068 - 80 = 0,68 meter
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