How to find the diameter of an unknown measure for a circle?

The Dragon answered

Try this if its circumference is given:
Since Circumference= pi x diameter, by re-equating you'll get
Diameter= Circumference /pi
Remember, diameter is twice the measure of its radius.

John McCann answered

Area = pi*r²Do you have the area? Diameter is 2 * radius.

Sanjay sagar answered

Draw two non -parallel chords inside the circle and draw the perpendicular bisector of each. The intersection point will give you the centre . From this centre you can find the diameter

How to find the diameter of an unknown measure for a circle?

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