
1. If the base of a right prism are circular it is called cylinder.
2. The cylinder belongs to the family of prisms.
3. The curved surface area is equal to = Perimeter of the base * height
4. Area of the base of a cylinder = Area of circle.
5. Total surface area of a cylinder = Curved surface area + 2 * base area.
6. Volume of a cylinder = base area * height 7. A cycle tube is an example of a cylindrical shell which is neither a solid cylinder nor a hollow cylinder. 8. The ratio of curve surface area's of two cylinder of equal heights is equal to the ratio of their radii. 9. The ratio of the volumes of two cylinders of equal heights is equal to the ratio of squares of their radii. 10. The ratio of two curved surface area's of two cylinders of equal radii is equal to the ratio of their heights. 11. The ratio of the volumes of two cylinders of equal radii but of different heights is equal to the ratio of their heights. 12. If the volumes of two cylinders are equal, then the ratio of the squares of radii is inversely proportional to the heights of the cylinders. 13.The cross section by a vertical plane of a cylinder is a rectangle.
14. A right circular cylinder:
15. Axis of the cylinder:
16. Lateral surface:
17. Hollow cylinder:
18. Solid cylinder:
19. Cylindrical shell: 