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Math Help - Finding the Area of Circle

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    Finding the Area of Circle

    A Piece of String fits exactly around the curved surface of a cylinder whose radius is 3 cm. Find the length of the string.
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    MHF Contributor Mathstud28's Avatar
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    Quote Originally Posted by Illuminati View Post
    A Piece of String fits exactly around the curved surface of a cylinder whose radius is 3 cm. Find the length of the string.
    6\pi...this should be obvious from \text{Circumference of circle}=2\pi{r}
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