bantuin dong cara jalan nya gimana

Dik : Lo = 1.5m
Delta T = 120-20 = 100°
a = 25x 10^-6/°C

Dit :∆L... ?

penye :
∆l = Lo . a . delta T
∆l = 1,5 x 25x10^-6 x 100
∆l = 0.00375 m

^_^