CYLINDER

PRERNA FOR IAS

CYLINDER

(CSAT)

1. Definition of a Cylinder

A cylinder is a three-dimensional solid with two equal and parallel circular bases connected by a curved surface. It is one of the most common geometric shapes and is found in objects such as pipes, water tanks, cans, and storage containers. The bases remain identical throughout the shape.

2. Two Circular Bases

A cylinder has two congruent circular bases located at opposite ends. These bases are parallel to each other and have the same radius. The circular bases determine the size of the cylinder and play an important role in calculating area, volume, and other dimensions.

3. Curved Surface

The curved surface joins the two circular bases of the cylinder. It wraps around the cylinder and forms its lateral boundary. This surface contributes to the curved surface area and is commonly considered when calculating the material needed to cover cylindrical objects.

4. No Vertices

A cylinder has no vertices because it does not contain any corners or sharp points. Unlike pyramids and prisms, its surfaces are smooth and continuous. The absence of vertices makes the cylinder a non-polyhedral three-dimensional solid.

5. No Edges