Pressure is determined as force per unit area of the surface. The $SI$ unit of pressure, Pascal is as shown below:
$1 \, Pa = 1 \, N \, m^{-2}$
If mass of air at sea level is $1034 \, g \, cm^{-2}$, calculate the pressure in Pascal.

Pressure is defined as force acting per unit area of the surface.
$P = \frac{F}{A}$
Force $(F)$ = $mass \times acceleration \, due \, to \, gravity = 1034 \, g \, cm^{-2} \times 9.8 \, m \, s^{-2}$
Convert units to $SI$ $(kg, m, s)$:
$F = 1034 \, g \times (10^{-3} \, kg / 1 \, g) \times 9.8 \, m \, s^{-2} = 1.034 \, kg \times 9.8 \, m \, s^{-2} = 10.1332 \, N$
Area $(A)$ = $1 \, cm^{2} = (10^{-2} \, m)^{2} = 10^{-4} \, m^{2}$
Pressure $(P)$ = $\frac{F}{A} = \frac{10.1332 \, N}{10^{-4} \, m^{2}} = 1.01332 \times 10^{5} \, N \, m^{-2}$
Since $1 \, Pa = 1 \, N \, m^{-2}$, the pressure is $1.01332 \times 10^{5} \, Pa$.