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# How Do You Calculate the Radius of a Circle?

The calculation of the radius of a circle is expressed by the equation r = C / 2 * pi. This is where r is the radius, C is the circumference and pi is the irrational number beginning with 3.14.

Continue ReadingIf the diameter of the circle is already calculated, divide the diameter by 2 to find the radius. If the area of the circle is already calculated, the radius is solved using two steps. First, multiply the area times pi. Then, take the square root of the first calculation. The radius is the distance of between the center of the circle to its edge.

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Q:
## How Do You Calculate Diameter?

A: To calculate the diameter of a circle, multiply the radius of the circle by 2. Diameter is the measure of the length of a straight line that passes through... Full Answer >Filed Under: -
Q:
## What Is the Formula for Radius?

A: The formula for a radius is the diameter of a circle divided by two. The radius of a circle is defined as the distance from the middle of a circle to any p... Full Answer >Filed Under: -
Q:
## What Would Be the Radius of a Circle With a Diameter of 8 Inches?

A: A circle with a diameter of 8 inches has a radius of 4 inches. To find the radius of a circle based on a given diameter, divide the diameter by 2. Conseque... Full Answer >Filed Under: -
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## How Do You Find the Arc Length of a Circle?

A: The length of an arc of a circle is obtained by using the formula L=?r?/180, where L is the length of the minor arc of the circle, r is the radius of the c... Full Answer >Filed Under: