What is the volume of dead space air in humans (in $; mL$)?

$A$ man breathes $12$ times in a minute. During this,he achieves $2$ times the $TLC$ (Total Lung Capacity). What is the total amount of air this man has inspired?

Vital capacity of the lungs is defined as:

What is the formula for $EC$ (Expiratory Capacity)?

The vital capacity of the lung is equal to: (in $, ml$)

Residual volume is....