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How To Calculate Octagon Side Length From Diameter

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Octagons are eight-sided polygons that can be found in various shapes and sizes. If you are working on a project that involves octagons, it is important to know how to calculate the side length from the diameter. In this article, we will go over the steps on how to calculate the octagon side length from diameter in relaxed English language.

What is an Octagon?

An octagon is a polygon with eight sides and eight angles. It is a geometric shape that can be found in various forms such as regular octagons and irregular octagons. A regular octagon has all sides and angles equal, while an irregular octagon has sides and angles of different lengths and sizes.

What is Diameter?

The diameter of an octagon is the distance from one side of the polygon to the opposite side, passing through the center. It is also the longest distance across an octagon.

Calculating Octagon Side Length from Diameter

The formula for calculating the octagon side length from diameter is:

Side Length = Diameter / (√2 + 2)

Let's break down the formula into steps:

  1. Measure the diameter of the octagon.
  2. Divide the diameter by (√2 + 2).
  3. The result is the octagon side length.

For example, let's say the diameter of an octagon is 10 cm. To calculate the side length:

Side Length = 10 / (√2 + 2)

Side Length = 10 / (1.414 + 2)

Side Length = 10 / 3.414

Side Length ≈ 2.93 cm

Therefore, the side length of the octagon is approximately 2.93 cm.

Using Pythagorean Theorem

Another way to calculate the octagon side length from diameter is by using the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. In an octagon, this theorem can be used to calculate the side length from the diameter.

The formula for calculating the octagon side length from diameter using the Pythagorean theorem is:

Side Length = Diameter / (2 + √2)

Let's break down the formula into steps:

  1. Measure the diameter of the octagon.
  2. Divide the diameter by (2 + √2).
  3. The result is the octagon side length.

For example, let's say the diameter of an octagon is 10 cm. To calculate the side length:

Side Length = 10 / (2 + √2)

Side Length ≈ 2.93 cm

Therefore, the side length of the octagon is approximately 2.93 cm.

Conclusion

Calculating the octagon side length from diameter is an essential skill when working on projects that involve octagons. You can use either the formula or the Pythagorean theorem to calculate the side length. Always remember to measure the diameter accurately to get the correct result. With these steps, you can easily calculate the octagon side length from diameter and continue with your project.

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