Jawabanmu

2014-02-15T21:38:02+07:00
Koefisien muai panjang platina = 0,000009/³C

Lt = L
₀ ( 1 +  \alpha x Δt)
    = 140 cm ( 1 + 0,000009/³C x 80°C)
    = 140 cm (1 + 0,00072)
    = 140 cm + 0,1008 cm
    = 140,1008 cm