Understand the concept of circumference by learning the definition, circumference geometry definition, circumference equation, and circumference of a circle formula. Check-out the interactive simulation for better understanding and try...

This interactive exercise focuses on working with the radius of various circles to find the circumference and area as well as challenging you to find the distance a square wheel travels around the track.

A basic review of circles and how to calculate the circumference, radius, diameter, and area. Includes practice questions.

Learn about the radius of a circle with this useful reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.

Rather than dividing a circle into some number of segments (like 360 degrees), mathematicians often prefer to measure angles using the circumference of a unit circle - a circle with radius 1. This way of measuring angles is called...

For this task, young scholars are asked to explain the formula for finding the circumference of a circle. Aligns with G-GMD.A.1.

For this task, young scholars investigate and develop an understanding of the formula for the area of a circle. Aligns with G-GMD.A.1.

Need some ideas for Pi Day on March 14th? You can get some great resources at this location. There are all kinds of links available.