length change ( L final - L initial) linear expansion coefficent (a) * initial length (L initial) *[(final temperature (T final) - initial temperature (T initial) ] 16.6*10^-6 /K * 2.5 m * ( 35 - 15 ) 16.6*2.5*20*10^-6 830*10^-6 m 830*10^-6*10^3 mm 830*10^-3830/10000.83 mm
Coefficient of thermal linear expansion 16.6 x 10^-6 /K change in length (2.5 m)(16.6 x 10^-6 /K)(35 - 15)K change in length 8.3 x 10^-4 m 0.83 mm
