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No, Seriously, What's The Radius?

Geometry Level 1

An equilateral triangle is inscribed in a circle. Which of these shapes has a larger perimeter? The triangle, or the circle?

They have the same perimeter The circle The triangle

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

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including olympiad champions, researchers, and professionals.

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by Pi Han Goh

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