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

    2 dni temu · How do you find the radius and diameter of a circle? To calculate the radius of a circle, divide its circumference by 2π; for the circle's diameter, divide the circumference by π . Let's say that the circumference of a given circle is 20 inches.

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

    2 dni temu · To find the radius from the circumference of a circle, you have to do the following: Divide the circumference by π, or 3.14 for an estimation. The result is the circle's diameter. Divide the diameter by 2. There you go, you found the circle's radius.

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

    6 dni temu · The radius of a circle from circumference: if you know the circumference c, the radius is r = c / (2 × π). The radius of a circle from diameter: if you know the diameter d, the radius is r = d / 2.

  4. www.khanacademy.org › cc-7th-area-circumference › aRadius, diameter, & circumference | Circles (article) | Khan...

    Another formula to find the circumference is if you have the diameter you divide the diameter by 2 and you get the radius. Once you have the radius you times the radius by 2 and times it by pie and then you get the circumference. Here are the two different formulas for finding the circumference: C = πd C = 2πr d = diameter, C = circumference ...

  5. 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.

  6. www.khanacademy.org › v › finding-radius-and-diameter-from-circumferenceRadius & diameter from circumference (video) | Khan Academy

    The formula to find the area of a circle is: Area = pi times the radius squared. The radius is a line that starts at the center of the circle and goes to the edge. If you cut the circle in half, the radius would be the distance from the center to the edge. To find the area, we need to know the radius.

  7. www.gigacalculator.com › calculators › circumference-of-circle-calculatorCircumference of a Circle Calculator

    Circumference of a Circle Calculator. Use this calculator to easily calculate the circumference of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc. If you know the diameter, first divide it by two to get the radius.