radius is half of the diameter of a circle.diameter is the line drawn which passes through the centre point of the circleand divides the cicle in two equal halve,forming two semicircles.
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Nilay Majorwar answered this
In a circle, a line segment that joins the centre of the circle with any point on the circumference of the circle is called the radius of the circle.
Radius = 1/2*Diameter
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Akanksha Chauhan answered this
the lenght from the centre of a circle to the outer boudary is known as radius. it is half of the diameter.
