Q$5)$ The following data have been collected for a lake with $1\mathrm{.}2$ million square meters area:

Average water temperature: $\backslash (22^\{\backslash$circ$\}\backslash$mathrm$\{$C$\}\backslash )$

Average relative humidity: $\backslash (28\backslash \%\backslash )$

Average wind velocity at $1$ m above ground: $\backslash (12\backslash$mathrm$\{$~km$\}/\backslash$mathrm$\{$h$\}\backslash )$

Using the given data:

a$.$ Estimate the average daily evaporation from the lake using Mayer's formula.

b$.$ Estimate the weekly water loss from the lake due to evaporation. $(25\backslash \%)$