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L = 0,4 (1+0,00002 X 50)
L = 0,4 X 1,001 = 0,4004 m = 40,04 cm..
α = 0,00002/'C
Δt = 50 - 0 = 50'C
Ditanya = Lt ..?
Jawab = Lt = Lo (1 + a x Δt)
= 0,4 (1 + 0,00002 x 50)
= 0,4 (1 + 0.001)
= 0,4 x 1,001
= 0.4004 m
Jika dikonversikan ke satuan cm hasilnya adalah 40,04 cm