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

    3 dni temu · If you know the radius or diameter of the circle, the area of the circle formula is: a = πr² = π × (d / 2)². If radius and diameter are unknown, you can calculate it from the circumference: a = c² / 4π. If you are interested in calculations of some fraction of a circle, check:

  2. www.omnicalculator.com › math › circle-diameterDiameter of a Circle Calculator

    2 dni temu · If you're wondering how to calculate the diameter of a circle, this diameter of a circle calculator is a perfect choice. You will need either the radius , the circumference , or the area of a given circle for the calculations.

  3. www.omnicalculator.com › math › circle-formulaCircle Formula Calculator

    6 dni temu · Formula to calculate the diameter of a circle given its radius, or vice versa. The formula of the diameter of a circle is the most straightforward of the equations and says that diameter ( d) equals twice the radius ( r): d = 2r. r = d/2. The calculation of circumference and area of a circle formulas are more tricky.

  4. www.symbolab.com › calculator › geometryCircle Calculator - Symbolab

    The Circle Calculator is a user-friendly online tool that instantly calculates the area, circumference, diameter, and radius of a circle. Simply input any known value and get immediate results with this intuitive, efficient web-based calculator.

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

    6 lut 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.

  6. goodcalculators.com › circle-calculatorCircle Calculator | Good Calculators

    With our Circle Calculator, you can determine the area, circumference, radius, and diameter of a circle by entering just one known value. The calculator will automatically calculate the other values. Formulas. This calculator uses the following formulas: Radius = Diameter / 2. Circumference of a circle = 2 × π × Radius. Area of a circle = π ...

  7. 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.