Cylinder
Definition of Cylinder
A Cylinder is a threedimensional geometric figure that has two congruent and parallel bases.
More About Cylinder
 Right Cylinder: A right cylinder is a cylinder in which the centers of the bases are aligned directly one above the other.
 Right Circular Cylinder: When the base of a right cylinder is a circle, it is called a right circular cylinder.
 Oblique Cylinder: When the centers of the bases of a cylinder are not aligned directly one above the other, it is called an oblique cylinder.
Video Examples: Surface Area Of A Cylinder
Solved Example on Cylinder
Ques: Which of the following coincides with the axis of rotation of a right cylinder?
Choices:
A. its altitudeB. its base
C. its surface area
D. none of these
Correct Answer: A
Solution:

Step 1: The altitude of a right cylinder coincides with its axis of rotation.
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