4.72 x 106 Nm-2
4.36 x 106 Nm-2
4.28 x 106 Nm-2
4.25 x 106 Nm-2
Correct answer is D
In general, pressure varies with depth in the relation p = lgh = 850 x 10 x 500 = 4250000 = 4.25 x 106 NM-2
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