Decagon Side Length

Geometry Level 2

2 regular decagons (10-sided) have sides lengths 16 cm and 30 cm. A third regular decagon has area that is equal to the sum of areas of the other 2 decagons. What is the side length (in cm) of the third regular decagon?

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Decagon Side Length

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100 Day Summer Challenge

Decagon Side Length

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.