A dam holds a reservoir lake behind it with surface area A. Just behind the dam, the lake has depth \( d \).
(A) What is the water pressure at the base of the dam?
(B) What is the water pressure \( 3.0 \mathrm{~m} \) below the lake's surface?
\[
A=8 \mathrm{~km}^{\wedge} 2 ; d=12 \mathrm{~m} ;
\]
(in \( \mathrm{Pa}) \)
A: \( 1.042 \times 10^{5} \)
B: \( 1.511 \times 10^{5} \)
C: \( 2.190 \times 10^{5} \)
D: \( 3.176 \times 10^{5} \)
E: \( 4.605 \times 10^{5} \)
F: \( 6.678 \times 10^{5} \)
G: \( 9.683 \times 10^{5} \)
H: \( 1.404 \times 10^{6} \)
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(in \( \mathrm{Pa} \) )
A: \( 4.285 \times 10^{4} \) \( \square \) B: \( 5.356 \times 10^{4} \)
C: \( 6.695 \times 10^{4} \)
D: \( 8.368 \times 10^{4} \)
E: \( 1.046 \times 10^{5} \)
F: \( 1.308 \times 10^{5} \)
G: \( 1.634 \times 10^{5} \)
H: \( 2.043 \times 10^{5} \)
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