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P = ¥gh
¥ = massa jenis air = 1 g/cm^3 = 0,001 / 0,000001 = 1.000 kg/m^3
h = 120 - 50 = 70 cm= 0,7 m
P = 1000 x 10 x 0,7 =
7.000 N/m²
jawabannya B
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