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a=1,2×10`5/°C=0,000012/°C
T1= 25°C
T2= 50°C
∆T= T2-T1
= 50-25=25°C
Dit: L(panjang akhir)?
L= Lo×(1+a×∆T)
= 10×(1+0,000012×25)
= 10×1,0003
= 10,003 m
ITU JAWABAN YG BENARNYA,MOHON MAAF KALO MENURUTMU ADA YG SALAH