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The distance between centre and circumference of a circle is called radius.
In a circle radius is the half of its diameter.which is d=2r
a straight line from the centre to the circumference of a circle or sphere.plural form is radii.the distance from the centre of a circle to the point on the circle is called radius.
It is the distance between centre and circumference.
a straight line from the centre to the circumference of a circle or sphere
Aline which one end is on the centre and another is on the boundry of circle , that line is radius .
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