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## Homework Statement

A rod is measured to be exactly 21.02 cm long using a steel ruler at a temperature of 21.1oC. Both the rod and the ruler are placed in an oven with a temperature of 340.0oC where the rod now measures 21.32 cm using the same ruler. What is the coefficient of thermal expansion for the material of which the rod is made?

## Homework Equations

deltaL=L*alpha*deltaT

deltaL=Change in length

alpha=linear thermal expansion coefficient

deltaT= change in temperature

## The Attempt at a Solution

I'm not sure how to solve for alpha of the rod =/