Final answer:
The total lung capacity is calculated using the formula: Vital capacity + Inspiratory reserve volume
Step-by-step explanation:
Total lung capacity (TLC) is calculated using the formula: Vital capacity + Inspiratory reserve volume. Vital capacity is the maximum amount of air that can be inhaled or exhaled during a respiratory cycle, and it is calculated by adding the expiratory reserve volume, tidal volume, and inspiratory reserve volume. The inspiratory reserve volume is the additional amount of air that can be inhaled after a normal inhalation.