Table of Contents

Last modified on September 6th, 2022

The circumference of a circle is simply the circumference of the circular base of the cylinder. It is measured in units of length such as m, cm, mm, and ft. Shown below is the circumference (c) of a cylinder with dotted lines.

Let us now learn how to find the circumference of a cylinder with formulas and solved examples.

The formula used to calculate the circumference of a cylinder is obtained by multiplying the radius by 2 to obtain the diameter and then multiplying the result with pie (π) = 3.141. Thus, the formula to calculate the circumference of a cylinder is given below:

** Circumference (C)** =

Let us solve some examples to understand the concept better.

**Find the circumference of a cylinder having radius of 12 inches.**

Solution:

As we know,

Circumference (C) = 2πr, here π = 3.141, r = 12 inches

= 2 × 3.141 × 12

= 75.384 inches

**A cylinder has a diameter of 18 cm. Calculate the circumference of the cylinder?**

Solution:

As we know,

Radius (r) = d/2, here d = diameter = 18 cm

= 18/2 cm

= 9 cm

Now, as we know

Circumference (C) = 2πr, here π = 3.141, r = 9 cm

= 2 × 3.141 × 9

= 56.538 cm

Last modified on September 6th, 2022