The Eiffel tower in Paris is made primarily of iron, whose coefficient of linear expansion is about 10 x 10 /C. On a cold day when the temperature is -10'C the Eiffel tower is 300 meters tall. Its height on a hot day when the temperature is 40 C is O 300.0015 m. O 300.015 m. O 300.15 m. O 301.5 m. O 315 m