How does streamlined shape helps plane to ''fly''?

A streamlined shape helps a plane fly by reducing aerodynamic drag, allowing it to move more efficiently through the air. This design minimizes turbulence and resistance against the airflow, enabling the aircraft to maintain speed and stability. Additionally, a streamlined shape enhances lift by directing air smoothly over the wings, which is crucial for takeoff and sustained flight. Overall, this efficiency leads to improved fuel economy and performance.