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  1. www.omnicalculator.com › math › circle-measurementsCircle Measurements Calculator

    1 Ιουλ 2024 · Our circle measurements calculator helps to calculate the radius, diameter, circumference and area of a circle.

  2. www.omnicalculator.com › math › circleCircle Calculator

    22 Ιουλ 2024 · This circle calculator finds c (circumference), d (diameter), a (area), and r (radius) of a circle.

  3. www.calculator.net › circle-calculatorCircle Calculator

    This calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement.

  4. www.omnicalculator.com › math › radius-of-a-circleRadius of a Circle Calculator

    24 Ιουλ 2024 · The radius of a circle calculator returns the length of a circle's radius based on the input data: the circumference, area, or diameter.

  5. www.calculatorsoup.com › calculators › geometry-planeCircle Calculator

    6 Φεβ 2024 · Calculate the area, circumference, radius and diameter of circles. Find A, C, r and d of a circle. Given any 1 known variable of a circle, calculate the other 3 unknowns. Circle formulas and geometric shape of a circle.

  6. Select the Type of Calculation: Choose what you want to calculate—area (A), circumference (C), diameter (d), or radius (r). Enter the Known Value: Input the known dimension of the circle. Adjust π Value (Optional): The default value of π (pi) is 3.1415926535898, but it can be customized if necessary.

  7. Radius = Diameter ÷ 2. Radius Formula from Circumference. The perimeter of a circle is called its circumference. It is the boundary of a circle and can be expressed by the formula: C = 2πr. Here, C is the circumference, r is the radius of the circle, and π is the constant which is equal to 3.14159. The radius is the ratio of circumference to 2π.