No, a cylinder does not have 3 sides. A cylinder is a three-dimensional shape that consists of two circular bases connected by a curved surface.
To elaborate, when we refer to ‘sides’ in geometry, we typically mean the flat surfaces of a shape. In the case of a cylinder, it has two flat circular bases at the top and bottom, and one curved surface that wraps around its height. Therefore, it would be more accurate to say that a cylinder has two sides (the two bases) and one continuous curved surface.
The confusion may arise from comparing a cylinder to other shapes, like a triangular prism, which has three flat rectangular faces in addition to its triangular bases. In summary, a cylinder does not have three sides, but rather two circular bases and a curved surface that connects them.