Diameter of a circle:

Today lets learn about what is diameter of a circle, volume of a circle. Let me first define you what is diameter of a circle. Diameter is any straight line segment which passes thorough the center of the circle and whose end points are on the circle. 
Diameter of circle is nothing but a longest chord of a circle.
Diameter is also called as radii of the circle, which measures twice the length of the radius of the circle.

Every 3 dimensional object has volume. In the same way the circle also has volume and the volume formula of a circle is given below:

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