Astaresult of air at the top of a barometer the height of the mercury column is \(73.5 cm\) when it should be \(75.0 cm\) the velume of the space above the mereury is \(8.0 cm ^{3}\).
Calculate the correct barometrie height when the barometer reads 74.cm and the volume of the space above the mercury is \(6.0 cm ^{3}\)