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By Isa McKenty

Tags: Circle, Area, Radius, Root, Pi, Diameter, Circumference

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Posted: 2013-11-11
Radius of a Circle from its Area
Radius of a Circle from its Area
$$$r = \sqrt{A \over \pi}$$$

If you need to find the Radius ($$r$$) of a circle, and only have the Area ($$A$$) to work with, you can use this handy formula.

If you have the Circumference, use this formula: www.automathic.org/152_radius-of-a-circle



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