A geometry problem by Adrian Gonzalez

Geometry Level 3

The ratio of the radii of two concentric circumferences is 1:3. If AC is a diameter of the largest circle, BC is a chord of the larger circle that is tangent to the small circle and AB = 18, What is the radius of the larger circle?

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100 Day Summer Challenge

A geometry problem by Adrian Gonzalez

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Featured

Topics

Community

100 Day Summer Challenge

A geometry problem by Adrian Gonzalez

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.