The process you would use to find the circumference of a circle completely
depends on what information you already have about the circle. For example,
you might be given the circle's area, or its radius, or its diameter, or the length
of one radian of arc along the circumference, and each of those would require a
different method to find the circumference.
The easiest example is the one where you know the circle's diameter. In that
case, simply multiply the diameter by (pi) to get the circumference.
The next easiest case is the one where you have the circle's radius ... let's say
the radius is 1.5 meters. Knowing that the radius is half of the diameter, you
first double the radius, and find that the diameter 3.0 meters. Then you get
the circumference just as you did in the first example ... multiply the diameter
by (pi). With a radius of 1.5 meter, you would find that the circumference is
about 9.425 meters. (rounded)
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It depends on what information you have: radius, diameter, lengths of tangents from a point outside the circle, length of chord and its distance from the centre, etc. Also, the term is circumference, not circumfrence.
Circumfrence = pi * diameter It can be experimentally derived very easily.
By multiplying the diameter by pi, since the circumference of a circle is 3.14 times the diameter.
You get a string that can fit around the bowl and wrap the string around it and mark where they overlap. measure the string and there is the circumfrence!
If you do not have the area, what do you have? The radius is half the diamiter The radius is PieR2 Worked backwards if you know the circumfrence.