Question

Suppose a railroad rail is 4 kilometers and it expands on a hot day by 12 centimeters in length. Approximately how many meters would the center of the rail rise above the​ ground? The center of the rail would rise approximately nothing meters above the ground. ​(Type an integer or decimal rounded to the nearest tenth as​ needed.)

Answer 1

Consider equivalent problems with simpler solutions. This is a really really long problem.

You need an equivalent problem to get a numerical answer.