Give the expressions for linear, area and volume thermal expansions.

Explanation

`alpha_(L) = (Delta L)/(L_(0) Delta T)`
Where `alpha_(L)` = coefficient of linear expansion.
`Delta L_(0)`= Change in length
`Delta T =` Change in temperature.
`alpha_(A) = (Delta A)/(A_(0) Delta T)`
Where `alpha _(A)=` Coefficient of area expansion
`Delta A` = Change in area
`A_(0)`= Original area
`Delta T=` Change in temperature
`alpha_(A) = (Delta V)/(V_(0) Delta T)`
Where `alpha_(V)= ` coefficient of volume expansion
`Delta V`= Change in volume
`V_(0) = ` Original volume
`Delta T =` Change in temperature