How do you measure diameter?
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Q:

How do you measure diameter?

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Quick Answer

If the radius of the circle is known, the diameter formula is diameter=2R, where R equals the circle's radius. If the circumference of the circle is known, the diameter is found using diameter=C/Pi, where C is the circumference and pi is approximately 3.142.

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Full Answer

If the area of a circle is known, the diameter is the square root of 4A/Pi, where A is the area of the circle and Pi is approximately 3.142. The diameter of the circle is the length of the line through the center of the circle that touches two of the points on its edge The center of the circle is the midpoint of the diameter. A diameter may also be referred to as a chord, which is any line that joins two points on a circle. The diameter is the longest chord on any circle.

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Related Questions

  • Q:

    What are some ways to measure a radius?

    A:

    The most direct way of measuring the radius of a circle is to measure from the center of the circle to the outside border. If you cannot determine the center of the circle, measure the circumference of the circle and divide that number by 2?.

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    How do you find the domain and range of a circle?

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    The domain of a circle is the X coordinate of the center of the circle plus and minus the radius of the circle. The range of a circle is the Y coordinate of the center of the circle plus and minus the radius of the circle. It is easy to remember which coordinates domain and range refer to because X is alphabetically before Y, and domain is alphabetically before range.

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    How do you figure out the circumference of a circle?

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    To find the circumference of a circle, multiply the diameter by pi or double the radius times pi. Pi is an unchanging number that rounds off to 3.14.

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  • Q:

    How do you calculate diameter?

    A:

    To calculate the diameter of a circle, multiply the radius of the circle by 2. Diameter is the measure of the length of a straight line that passes through the center of a circle, touching the circumference or surface at two opposite end points. Radius is the distance from the center of the circle to any point on the circumference.

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