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Radius of a Circle

The radius of...

Question

The radius of inner circle is represented by __ and of outer circle is represented by _ .

O and OB

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A and B

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OA and OB

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OB and OA

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Solution

The correct option is C OA and OB
Inner circle is the circle with center O and radius OA.
Outer circle is the circle with center O and radius OB.
[The radius of a circle is a line segment connecting the center of the circle to any point on the circumference of the circle.]

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