The Atmospheric Pressure $p$ Decreases Exponentially with the Height $h$ (In Kilometres) Above the Earth According the Function

Short Answer

The atmospheric pressure $p$ decreases exponentially with the height $h$ (in kilometres) above the Earth according the function $p=101.1 e^{-h / 6.4}(\mathrm{KPa})$ . Determine the height at which the atmospheric pressure is $25 \mathrm{kPa}$ .