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A steel sheet at 20^(@)C has the same su...

A steel sheet at `20^(@)C` has the same surface area as a brass sheet at `10^(@)C` . If the coefficient of linear expansion of steel is `11xx10^(-6)//K` and that of bross is `19xx10^(-6)//K` , the common temperature at which both the sheets would have the same surface area is

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