How to Calculate Diameter?

Answer

To calculate diameter, you need to know either the radius of a circle or a formula that relates the diameter to another factor like circumference. For example, If you are given the radius, then twice the radius is you diameter. However, if you are given the circumference of a circle, you calculate the diameter by knowing that circumference C of a circle is equal to pi x (diameter). From this equation, you find that the diameter is equal to the C/pi. You can find more information here: http://www.mathgoodies.com/lessons/vol2/circumference.html
Q&A Related to "How to Calculate Diameter?"
Well, diameter of a circle is two times the radius. It is calculated as 2 multiplied by radius of the circle i.e. 2r (where r is the radius).
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1. Measure from one side of the circle directly across to the other side, through the circle's center. If the circle is drawn to scale, this measurement will be the diameter. 2. Multiply
http://www.ehow.com/how_6011124_calculate-diameter...
1 If you have the radius of the circle : Add the radius again, or multiply the radius by 2. Or, r2 = D 2 If you have the circumference : The circumference is divided by Pi (3.14),
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divide diameter by 2.
http://wiki.answers.com/Q/What_is_the_formula_for_...
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