An open $($to atmosphere$),$ rigid$-$walled cylindrical tank contains $20L$ of water at $40C.$ Over a $2-$hour period of time the

water temperature varies from $40C$ to $80C.$ We will ignore water lost to evaporation in this question. If the tank is $0\mathrm{.}1m$ in

diameter, the change in water depth will be:

Select one:

a$.$ A decrease in height of $2500mm$;

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b$.$ An increase in height of $2500mm$;

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C$.$ A decrease in height of $54mm$;

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d$.$ An increase in height of $54mm$;

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e$.$ None of the above.

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