question 1.13

Pressure is equal to force / area

Force is equal to mass  into acceleration due to gravity
Density of the air is given to us .So we know that how much mass of air is there in 1 cm squared area
Convert this mass into kg
This is the SI unit of mass
Convert area from centimetre square to metre square
This is the SI unit of area
Now calculate force and divided by area and you will get the value of pressure in Pascal
Here is the work shown
F = 1034/1000 kg * 9.8m/s^2=10.1332 N

Area = 1cm^2 * 1m^2/100cm^2  = 1.0*1.0^-4m^2

P =10.1332 N/1.0*1.0^-4m^2=101332 pascal = 1.01332 *10^5 Pa