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What is meant by the statement “the atmo...

What is meant by the statement “the atmospheric pressure at a place is 76 cm of Hg"? State its value in Pa.

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The atmospheric pressure at a place is 75 cm of Hg. It means that the atmospheric pressure at that place is equal to the pressure due to mercury column of height `75` cm.
Given : `h=75 cm = 0.75m, g=9.8 ms^(-2), rho=13.6 g cm^(-3)=13.6xx10^(3)kg m^(-3)` .
Atmospheric pressure `P=hrhog`
`=0.75xx(13.6xx10^(3))xx9.8`
`=9.996xx10^(4)Nm^(-2)`
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