They are used to explore many other formulas and mathematical equations. Area = 201.1429 in² Area and circumference of circle calculator uses radius length of a circle, and calculates the perimeter and area of the circle. How do I find the circumference of a circle that has an area of 452.16 square meters? Research source B. Using this calculator, we will understand methods of how to find the perimeter and area of a circle. Be sure to also try our fun interactive Circumference and String game! For example: What is the area of a circle with a diameter of 4 m? Enter the radius, diameter, circumference or area of a Circle to find the other three. Feeling devastated from a breakup? References. How am I supposed to solve for the circumference and area, if the radius they gave me was x+1? Just multiply the diameter by pi, and you have your circumference! 21) area = 201.1 in² 22) area = 78.5 ft² Find the circumference of each circle. Last Updated: October 11, 2020 Excelling learners will be able to solve unfamiliar problems using their knowledge calculating the area and circumference of a circle. To find the circumference, you double the radius and multiply by pi. 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. The perimeter of a plane 2-D figure is the length of the outer periphery of the figure. Plug in the given information: C = 2π(x+1), C = 2πr = 2π(x+1) = 2πx + 2π1 = 2πx +2π = 6.28x + 6.28. Research source Once you have the radius, use this formula: 15 in. Our circumference and area worksheets are designed to supplement our Circumference and Area of Circles lessons. A. Take the square root to get the radius. {"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":"

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