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Mathematics 70 Online
notmeta:

how do u solve for the radios of a circle again '-'

Phantomdex:

r = C/2π

notmeta:

ok thanks :)

Phantomdex:

As another note, to have better explanation. 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 .

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