Answer
$18∗10^{−6} /C$
Work Step by Step
$ΔL/L=αΔT$. Plugging in the linear expansion of 0.18% and the temperature increase of 100 degrees, we get $α=0.0018/100$=$18∗10−6 /C$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.