Free Circle Radius calculator - Calculate circle radius given equation step-by-step

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It's also straightforward to find the area if you know the radius: a = \pi r^2 a = πr2 Using the Radius Calculator You can enter the radius and then compute diameter and

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Equation of a Circle Calculator

How to calculate the radius of a circle? General Formula: X 2 + Y 2=r2 where r is the radius Unlike parabolas, circles ALWAYS have X 2 and Y 2 terms. X2 + Y2=4 is a circle with

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If you know the circumference of a circle, you can calculate the radius based on the following formula: r = C / 2 ϖ where C = Circumference ϖ = Pi = 3.14159265 r = Radius Calculating the

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You can also calculate the circumference of a circle with a given radius by using algebra to isolate the C C in our formula. The radius to circumference formula is: C = 2πr C = 2 π r Radius

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Area of a circle = π * r 2. Area of a circle diameter. The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. Where: π is approximately