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How to find the circumference of a circle

# How to find the circumference of a circle

Okay, I'm new to this blog and I'm having a hard time figuring out how to get the circumference of a circle. I know what the formula for Pi is but I'm not sure of others surrounding the circle.In Mathematics, the circumference of any shape defines the path or the boundary that surrounds the shape. In other words, the circumference is also called the perimeter, which helps to identify the length of the outline of any shape. As we know, the perimeter and area of circle are the two important parameters of a circle. In this article, we will discuss the “Circumference of a circle” or “Perimeter of circle” with its definition, formula, methods to find the circle’s circumference with many solved examples.

## Circle

via GIPHY

In other words, the distance surrounding a circle is known as the circumference of the circle. The diameter is the distance across a circle through the centre, and it touches the two points of the circle perimeter. π shows the ratio of the perimeter of a circle to the diameter. Therefore, when you divide the circumference by the diameter for any circle, you obtain a value close enough to π. This relationship can be explained by the formula mentioned below.Since it is a curved surface, we can’t physically measure the length of a circle using a scale or ruler. But this can be done for polygons like squares, triangles and rectangles. Instead, we can measure the circumference of a circle using a thread. Trace the path of the circle using the thread and mark the points on the thread. This length can be measured using a normal ruler.

An accurate way of knowing the circumference of a circle is to calculate it. For this, the radius of the circle has to be known. The radius of a circle is the distance from the centre of the circle and any point on the circle itself. The figure below shows a circle with radius R and centre O. The diameter is twice the radius of the circle.Whether you're solving a math problem for school, making crafts, or putting fencing around your yard, knowing how to calculate the circumference of a circle will come in handy in a variety of circle-related problems. We’ll teach you the key circumference formulas you need to figure out the circumference of a circle when you know either the diameter or radius. (Source: www.wikihow.com)

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