The Eiffel Tower is a steel structure whose height increases by 19.7 cm when the temperature changes from -9 to +40 oC. What is the approximate height (in meters) at the lower temperature?

Answer 1

a = 13*10^-6/oC = Temp. coeff.
h*a*(T2-T1) = 0.197.
h*13*10^-6(40-(-9)) = 0.197,
h*0.000637 = 0.197,
h = 309.3 m.