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How can I find the circumference of a circle with only the diameter given?
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How can I find the circumference of a circle with only the diameter given?

User Zoltar
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2 Answers

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This is the formula C=π⋅d. It just purely multiplication.
User Isuru Perera
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The circumference of a circle is equal to pi times the diameter.

C=πd

The diameter is two times the radius, so the equation for the circumference of a circle using the radius is two times pi times the radius.

C=2πr

User JiratPasuksmit
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