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Master

Circumference

Master circumference with interactive lessons and practice problems! Designed for students aged 10-16!

Understanding Circumference

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Video explanation of this concept

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Beginner

Start here! Easy to understand

Now showing Beginner level explanation.

Beginner Explanation

The circumference is the distance around a circle. It can be calculated with the formula $C = 2\pi r$ or $C = \pi d$

Practice Problems

Test your understanding with practice problems

1

Quick Quiz

Single Choice Quiz
Beginner

A bicycle tire has a diameter of 26 inches. What is the circumference of the tire?

Please select an answer for all 1 questions before checking your answers. 1 question remaining.
2

Real-World Problem

Question Exercise
Intermediate

Building a Pool

You're building a circular pool with a diameter of 30 feet, and you want to put a decorative border around the outside edge. How much border material do you need?
Click to reveal the detailed solution for this question exercise.

Recap

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Review key concepts and takeaways