Infinite, but they all have same length.
It varies. There is no set diameter of a circle.
The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.The diameter of a circle is twice the radius.
A circle has 360 degrees, whatever its diameter.
The cord of a circle that contains the center of that circle is a diameter of that circle.
43 linear feet. The diameter of the circle is the longest distance that you can have in the circle.
There are about 38.48 square feet in a 7' diameter circle
A circle's diameter is twice its radius.
Any number you like. You can have a tiny circle with a tiny diameter or a huge big circle with a big diameter. The diameter is simply the "width" of the circle. It is the length of the line from one side to the other which passes through the centre.
A circle has an unlimited number of lines of symmetry. These lines are called the diameter. Why does a circle have an unlimited number of lines of symmetry? It's because a circle has a constant diameter regardless of where the diameter is measured from.
If you mean the diameter of a circle with area pi, then the diameter is 2. If you mean the diameter of a circle with circumference pi, then the diameter is 2. If you mean the diameter of a circle with diameter pi, then the diameter is pi. If you mean the diameter of a circle with radius pi, then the diameter is 2pi.
180
An infinite number.