Three Externally Tangent Circles

Geometry Level 2

The distances between any two centers of the three coplanar circles that are externally tangent to each other are 20, 24, and 28 cm. Find the area of the smallest circle.

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100 Day Summer Challenge

Three Externally Tangent Circles

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100 Day Summer Challenge

Three Externally Tangent Circles

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.

Used and loved by 4 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

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

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

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

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.