Understanding Circumference
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Beginner
Start here! Easy to understand
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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
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1
Quick Quiz
Single Choice Quiz
Beginner
A bicycle tire has a diameter of 26 inches. What is the circumference of the tire?
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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?
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