How to measure the radius of a circle? - ProProfs Discuss
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How to measure the radius of a circle?

How to measure the radius of a circle?

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Asked by Marlon , Last updated: Nov 29, 2024

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2 Answers

J. Pollock

J. Pollock

J. Pollock
J. Pollock, Science Professor, Los Angeles

Answered Sep 02, 2020

Calculating the Radius from the diameter of a circle is the easiest way to go about it.

• Divide the width of the circle by 2, and you will get the radius

• Measure from one side of the circle to the other

• Divide your answer by 2, and you have your radius

• So diameter could be 8 divided by 2 = 4 which would be the radius
There are several ways to come to the answer, but this is the easiest one.

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A. Samuel

A. Samuel

Writing quality content for contentment has been my passion since i was 21. I've been pursuing it as a Content Manager and Producer.

A. Samuel
A. Samuel, Content Manager, Masters in Marketing and accounting, Florida

Answered Aug 26, 2020

It can be confusing to know how to solve for the radius of the circle unless you know the right formula for it. The radius of the circle is the length of the line from the center of the circle going to the edge of the circle.

These are the steps that you can follow so that you can also solve for this:

• The first thing that you have to know is the formula to find the radius of a circle.
The formula is Radius= Circumference/2π

• The above-mentioned formula is what you are going to use when you know the circumference of the circle but you do not know the diameter.

• The formula is going to be different if you know the diameter of a circle, it is going to be radius=diameter/2.

• If you are familiar with the area of a circle, the formula is going to be area=π(radius2)
Just choose the formula based on the given details.


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