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A cd and a DVD have the same diameter. Explain why they have the same circumference
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A cd and a DVD have the same diameter. Explain why they have the same circumference

User Paradius
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Circumference is equal tp pi*diameter. Because pi is a fixed constant and diameter is the same, the two circumferences are the same.

Any two circular objects with the same diameter or the same radius have the same circumference.
User Charlie Reitzel
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