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A plane lamina has area 2m^(2) at 10^(@)...

A plane lamina has area `2m^(2)` at `10^(@)C` then what is its area at `110^(@)C` it's superficial expansion is `2 xx 10^(-5)//C`

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`A = A_(0) (1+beta Delta theta) =2 {1 +2 xx 10^(5) xx (110 -10)}`
`= 2 xx {1 xx 2 xx 10^(-3)}`
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