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Master

Diameter

Master diameter with interactive lessons and practice problems! Designed for students like you!

Understanding Diameter

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Video explanation of this concept

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Beginner

Start here! Easy to understand

Beginner Explanation

The diameter of a circle is simply twice its radius: $D = 2 \times R$.
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Practice Problems

Test your understanding with practice problems

1

Quick Quiz

Single Choice Quiz
Beginner

What is the diameter of a circle with a radius of $3.5$ inches?

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2

Real-World Problem

Question Exercise
Intermediate

Teenager Scenario

Imagine you have a circular garden with a circumference of $31.4$ meters. Calculate the diameter.
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3

Thinking Challenge

Thinking Exercise
Intermediate

Think About This

If the area of a circle is $78.5$ square inches, determine the diameter.

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4

Challenge Quiz

Single Choice Quiz
Advanced

A circle has an area represented by $\pi x^2$. If $x = 5$, what is the diameter?

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Recap

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Review key concepts and takeaways

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