$[(1)/(2)$ Points$]$

SERCP$119\mathrm{.}4.$P$\mathrm{.}009.$

$($a$)$ Calculate the absolute pressure at the bottom of a fresh$-$water lake at a depth of $24\mathrm{.}0$ m $.$ Assume the density of the water is $1\mathrm{.}00\backslash$times $10^(3)$k$($g$)/($m$^(3))$ and the air above is at a pressure of $101\mathrm{.}3$ kPa $.$

$($b$)$ What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of $34\mathrm{.}0$ cm $?$

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