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The radius of a circular pipe …

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The radius of a circular pipe is 28cm. What lenght of a tape is required to wrap twice around the pipe? (Take pie=3.14

    • Posted by Neha Mondal 5 years, 11 months ago

    CBSE > Class 07 > Mathematics
    • 2 answers

    Neha Mondal 5 years, 11 months ago

    Thanks yogita

    0Thank You

    Yogita Ingle 5 years, 11 months ago

    Radius of pipe = 18 cm.

    If we wrap ... then it means that we cover the circumference...

    So circumference = 2πr
    = 2 × 3.14 × 28
    = 56  × 3.14
    = 175.84 cm.

    But according to the question....

    The tape is to be wrapped twice.....
    so...

    = 2 × 175.84
    = 351.68 cm.

    Hence the length of tape required is 351.68 cm.

     

    1Thank You

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