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Topic Content:
- Properties of a Cylinder
- Lateral/Curved Surface Area of Cylinder
- Total Surface Area of Cylinder
A cylinder is a 3-D shape with two parallel circular bases connected by a curved surface.
Properties of a Cylinder:
- Circular cross-section.
- Two circular bases – one at its base and another at its top.
- It has two edges, at which the two plane (flat) surfaces meet with the curved surface. These edges are curved edges.
- A cylinder has 3 faces – The two plane surfaces and the curved surface.
- There are no vertices.
Example: a coke can, a glass cup, a pipe, etc.
Note: While cylinders aren’t prisms, the surface area calculation principles are similar. Both involve summing the areas of their bases and the curved surface area.
Lateral/Curved Surface Area of Cylinder:
If you were to cut the curved surface vertically and lay it flat, you would get a rectangle.
- The height (h) of this rectangle is the
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