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Semi: Prefix For Half

Geometry Level 2

True or False?

\(\quad\) If the perimeter of a circle is \(\pi\), then the perimeter of a semicircle with the same radius is \(\dfrac\pi2\).

True False

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, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations,
examples, and problems from the community.

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including olympiad champions, researchers, and professionals.

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by Pi Han Goh

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