# Linear Expansion problem

1. Jul 24, 2011

### bpollard

1. The problem statement, all variables and given/known data
The area of a copper plate is 0.1m^2. The coefficient of linear expansion (would be given in the problem). if the temperature increases from 22C to 100C, what is the new area of the copepr plate?

2. Relevant equations
L= LTá : but as alfa is linear Expansion coff

3. The attempt at a solution

I'm stuck....

2. Jul 24, 2011

### mathfeel

If the plate has sides a and b such that a b = 0.1m^2. Upon heating, it would expand to:
$(\alpha \Delta T a) (\alpha \Delta T b)$.