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What is a radius?


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Radius is a straight line extending from the center of a circle or sphere to the circumference or surface.

Answered by Maurletta D. -

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A radius is a straight line extending from the center of a circle or sphere to the circumference or surface. Go ChaCha!

Answered by Lachelle H. -

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A radius: (plural: radii) of a circle or sphere is a line segment from its center to its perimeter. I'm so glad you asked, ChaCha!

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