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Earn +20 ptsQ: Do you need a ruler to figure out circumference of a circle?
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When do you need to find the circumference of a circle?
circumference of a circle = 2piradiuis or diameter*pi
Why would you need to find the circumference of a circle?
As for example when constructing a round-about on a road you'll need to know its perimeter which is the circumference of a circle.
Why do you need Pi?
So that you can find the circumference of a circle.
What is a situation where you would need to know the circumference of a circle?
The circumference of a circle would be needed as for example when constructing a circular swimming pool.
Is an arc a fraction of a circumference?
It is part of a curve. If that curve happens to be a circle, then it is a fraction of a circumference but it need not be.
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