$A$ volume of $1 \ m^3$ is equal to

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.

The number of significant figures in $6.02 \times 10^{23}$ is

Round up the following up to three significant figures:
$(i) 34.216$
$(ii) 10.4107$
$(iii) 0.04597$
$(iv) 2808$

The number of significant figures in $2.0400$ is

Three successive measurements in an experiment gave the values $10.9$,$11.4042$,and $11.42$. The correct way of reporting the average value is