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Lo= 80 cm
α= 0,000017 °C
Δt= 90-40= 50°C
Dit:
Lt= ..?
Penye:
Lt= Lo(1+α×Δt)
Lt= 80(1+0,000017×50)
Lt= 80(1+0,00085)
Lt= 80(1,00085)
Lt= 80,068 cm
α = 0,000017/°C
Δt = 90-40= 50°C
Ditanya = Lt ..?
Jawb = Lt = Lo (1+α×Δt)
Lt = 0,8 (1+0,000017×50)
Lt = 0,8 (1+0,00085)
Lt = 0,8 (1,00085)
Lt = 0.80068 m ⇒ 80.068 cm