How to find the Perimeter of a Semicircle

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How to find Perimeter of a Semicircle

The Perimeter of a Semicircle is the total perimeter, or edge, of a semicircle. You can find the Perimeter of a Semicircle by using either the radius or diameter and then using the Perimeter of a Semicircle Formula. The diameter is twice as long as the radius, or the radius is half of the diameter. The formula you use for how to find Perimeter of a Semicircle depends on if you know the radius or the diameter. The formula is the different then the Perimeter of a Circle formula because a Semicircle is half of a circle. If you know the radius you will use the formula pi times the radius plus two times the radius. If you know the diameter you will, first, divide the diameter by two to convert it to radius. Then use the Perimeter of a Semicircle Formula. When simplifying you need to do follow the order of operations.

Common Core Standard: 7.G.5

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Finding Perimeter of a Semicircle Worksheet Example

The Perimeter of Semicircle is the complete border, or edge, of a half circle. You can discover the Perimeter of a Semicircle by utilizing either the diameter or radius across. The diameter is twice the length of the radius. The equation you use for how to discover Perimeter of a Semicircle depends on knowing either the diameter or radius. The equation is equivalent to Perimeter of a Circle with the extra step of dividing by two since it is a Semicircle.

Perimeter of a Semicircle Step-by-Step Example

Multiply the radius by pi and by two.
Add the two products together.
Make sure you include the correct units.
If the problem gives you the diameter, you must divide it by two to change it to the radius.

How to Solve Perimeter of a Semicircle Video

Watch our free video on how to find Perimeter of a Semicircle. This video shows how to solve problems that are on our free Perimeter of Semicircle worksheet that you can get by submitting your email above.

Watch the free Perimeter of a Semicircle video on YouTube here: Mathcation Video

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