Circumference

The circumference of a circle is the distance around the circle. It can be found using the formula:

Circumference (C) = 2 * π * r

Where π (pi) is a constant approximately equal to 3.14159, and r is the radius of the circle.

How to find the circumference of a circle

1. Measure the radius of the circle. The radius is the distance from the center of the circle to any point on the circle.
2. Use the formula C = 2 * π * r, where π is a constant (approximately 3.14159) and r is the radius of the circle.
3. Plug in the value of the radius into the formula and calculate the circumference.

Example

Let's find the circumference of a circle with a radius of 5 units.

Circumference (C) = 2 * π * 5

C = 2 * 3.14159 * 5

C ≈ 31.4159 units

Study Guide

When studying the topic of circumference, make sure to:

• Understand the concept of circumference as the distance around a circle.
• Memorize the formula for finding the circumference of a circle: C = 2 * π * r
• Practice calculating the circumference using different values of radius.
• Understand the relationship between the circumference and the diameter of a circle (C = π * d).

It's also important to remember the value of π (approximately 3.14159) and how it relates to the circumference of a circle.

Good luck with your studies!