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Area's clash

Geometry Level 1

If the area of a circle is EQUAL to 4 times its circumference.what is the value of radius (r=?) ?

8 2 4 16

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

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including olympiad champions, researchers, and professionals.

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by Syed Hissaan

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