Divide the area by pi; that gives you r ². Area is all of the space enclosed inside the circle's boundaries. Include your email address to get a message when this question is answered. BUT, if you have A = pi times (radius squared), for a circle, then you can calculate the radius (r). How do we figure circumference if the area of a circle is 3.14 cm squared? What is its area? [1] There are some formula to calculate circumference of a circle in excel, is defined on below table : How am I supposed to solve for the circumference and area, if the radius they gave me was x+1? This now makes the equation 2√1,570. Otherwise, see the wikiHow article, All tip submissions are carefully reviewed before being published, This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. This article has been viewed 155,300 times. We take the square root of r to find that r = √13. With using excel we can find circumference of a circle. To find the circumference of a circle, multiple Pi with the diameter of the circle. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. For example: Calculate the circumference of a circle with a radius of (x + 1). She has taught math at the elementary, middle, high school, and college levels. Set up the formula for the circumference of a circle, as a function of its area. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. You will also learn wha tis meant with 'pi'by looking at free maths videos and example questions. Both equations provide the same result. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. This image is **not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Remember these; a=2πr, and C=πr². In the example above, the radius would be 5 centimeters, so 5 centimeters times 6.28 is the same 31.4 centimeters. There are 11 references cited in this article, which can be found at the bottom of the page. How do I find the circumference of a circle that has an area of 452.16 square meters? Research source So I'm still new to programming and I don't know if this is all correct or not, but I'm trying to find the area circumference of a circle with a given radius. Python program to find the circumference of a circle : In this tutorial, we will learn how to find the circumference of a circle in python 3. Using this we can perform other types of calculations and generate the results. find diameter, circumference and area of circle using function C++ Compute Combinations by Factorials Prints a total number of combination possible for given n and r value. Double it to get the diameter. Even 3.14159 is only an approximation of pi's value (which is actually an apparently endless decimal number). This image may not be used by other entities without the express written consent of wikiHow, Inc.\n<\/p>**

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/4f\/Find-the-Circumference-of-a-Circle-Using-Its-Area-Step-7.jpg\/v4-460px-Find-the-Circumference-of-a-Circle-Using-Its-Area-Step-7.jpg","bigUrl":"\/images\/thumb\/4\/4f\/Find-the-Circumference-of-a-Circle-Using-Its-Area-Step-7.jpg\/aid6053672-v4-728px-Find-the-Circumference-of-a-Circle-Using-Its-Area-Step-7.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"

**\u00a9 2021 wikiHow, Inc. All rights reserved. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f1\/Find-the-Circumference-and-Area-of-a-Circle-Step-1-Version-2.jpg\/v4-460px-Find-the-Circumference-and-Area-of-a-Circle-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/f\/f1\/Find-the-Circumference-and-Area-of-a-Circle-Step-1-Version-2.jpg\/aid3795144-v4-728px-Find-the-Circumference-and-Area-of-a-Circle-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**

**License: Creative Commons<\/a>\n<\/p>**