Curved surfaces are shapes that are not flat and have a smooth, rounded form. Examples of curved surfaces include spheres, cylinders, and cones. These surfaces can be found in everyday objects, such as balls, cans, and traffic cones. The curvature of these surfaces can vary, affecting their appearance and properties. In mathematics, curved surfaces are studied in geometry and can be described using equations. The study of curved surfaces is important in fields like engineering and architecture, where understanding shapes helps in designing structures and products. Curved surfaces also play a role in nature, seen in objects like planets and shells.