A Cylinder is a three-dimensional 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 altitude
B. 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.