Final answer:
Apart from the physical length of a runway, the width, elevation, and surface type of the runway are considered when determining the amount of runway available for an aircraft's takeoff or landing. Each of these factors affects an aircraft's performance and safety.
Step-by-step explanation:
In the context of aviation, multiple factors are considered aside from a runway's physical length when determining how much of it is available for aircraft to takeoff or land. These include: runway width, runway elevation, and runway surface type.
Runway width is important as it gives enough space for an aircraft to maneuver during takeoff or landing. Additionally, runway elevation affects aircraft's performance; as higher elevations may require longer runways due to thinner air. Similarly, runway surface type impacts the braking efficiency of an aircraft upon landing; as unpaved or rain-soaked runways might need longer distances to stop. Therefore, All of the above (d) factors may be used when considering the amount of runway available for takeoff or landing.
Learn more about Runway Variables