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what is diameter?

Hi!
 
The chord passing through the centre of a circle is called diameter. The diameter of a circle divides it into two semicircles. The diameter of a circle is the longest chord of the circle and it is twice the radius.
 
In the following figure, AB is the diameter of the circle and O is the centre of the circle.
 
 
Cheers!

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View Full Answer

 The long line passing through the centre of the circle is called the diameter of the circle . 

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Hello..

The line that is half is called the radius like in the figure in the above answer the line if it had not passed O it was called a radius but the double of radius is called diameter.That is which passes the centra O and measures the whole circles length in between(not the circumference)is called a diameter.It is the double of the radius it divides it into 2 semi-circles.It joins the 2 ends of a circle.

Hope it was helpful CHEERS!!

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