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R
is for
Radius (Circle)
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Radius is the distance from the center of a <a href="/c/circle">circle</a> or a <a href="/s/sphere">sphere</a> to its edge. In math and science, radius helps you find other things like the <a href="/d/diameter">diameter</a> (twice the radius) and the area of a circle.
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Mathematics
Radius is the distance from the center of a
circle
or a
sphere
to its edge.
In math and science, radius helps you find other things like the
diameter
(twice the radius) and the area of a circle.
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