A thin brass sheet at 10^(@)C and a thin...

A thin brass sheet at `10^(@)C` and a thin stell sheet at `20^(@)C` have the same surface area. The common temperature at which both would have the same area is (coefficient of liner expansion for brass and steel are respectively `19xx10^(-6//@)C` and `11xx10^(-6//@)C)`.

`3.75^(@)C`

`-2.75^(@)C`

`2.75^(@)C`

`-3.75^(@)C`

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