-A Container Has a Vertical Tube,whose Inner Radius Is 12

-A container has a vertical tube,whose inner radius is 12.00 mm,connected to it at its side.An unknown liquid reaches level A in the container and level B in the tube-level A being 5.0 cm higher than level B.The liquid supports a 20.0 cm high column of oil,between levels B and C,whose density is 320 kg/m³.In the figure,the gauge pressure at level B is closest to:

A) 630 Pa
B) 310 Pa
C) 470 Pa
D) 790 Pa
E) 940 Pa

Correct Answer:

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