What is a semicircle?

A semicircle is half of a circle formed by cutting a circle along its diameter.

How do you calculate the area of a semicircle?

The area of a semicircle is calculated using the formula L = ½ × π × r², where r is the radius.

How do you calculate the perimeter of a semicircle?

The perimeter of a semicircle is calculated using the formula K = π × r + 2 × r, which includes the curved edge and the diameter.

Why is the area formula half of a circle?

Because a semicircle represents exactly half of a full circle, its area is half of the area of a circle.

Can this tool be used for learning purposes?

Yes. This tool is designed for educational use and helps students understand semicircle geometry through calculations, formulas, and visual illustrations.

Is my data stored or sent to a server?

No. All calculations and simulations are performed entirely in your browser. No data is stored or transmitted.

Where can I learn more about semicircles?

You can learn more from these resources: - [Wikipedia](https://en.wikipedia.org/wiki/Semicircle) - [Math Is Fun](https://www.mathsisfun.com/geometry/circle.html)

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Semicircle Calculator (Area & Perimeter)

Calculate the area and perimeter of a semicircle based on its radius. Includes formulas, visual illustration, and interactive practice questions.

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Semicircle Calculator (Area & Perimeter)