What is the total length of a Viking aircraft?

The total length of a Viking aircraft is 8.18 meters, which corresponds to the correct choice. This specific measurement reflects the design specifications established by the manufacturer and the intended operational capabilities of the aircraft. Understanding the dimensions of an aircraft like the Viking is crucial for various applications, such as assessing its suitability for certain airfields, understanding its performance characteristics, and ensuring compatibility with hangar facilities and transport methods. Knowing the exact length also aids in calculating weight distribution, stability, and overall aerodynamics.

The other options present different lengths that might relate to other aircraft models or might be incorrect specifications. 8.18 meters stands out as the precise length for this particular aircraft, which is important for both practical and theoretical discussions in aviation studies.