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What is the formula for the circumference of a circle using the radius?

What is the formula for the circumference of a circle using the radius?
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2 votes
What is the formula for the circumference of a circle using the radius?

User Cbednarski
by
8.6k points

1 Answer

4 votes
We know that:
C=πd Were π(pi)=3,14... and d=diameter
We know that the radious is 2d, so we aply this to the formula and we get that:
C=2πr
User Anyeli
by
8.6k points
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