Calculating the Area of a Copper Plate with Linear Expansion

bpollard
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Homework Statement


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?


Homework Equations


L= LTá : but as alfa is linear Expansion coff


The Attempt at a Solution



I'm stuck...
 
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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).
 
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