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20 December, 21:23

The circumference of a circle is given by the formula C=2πr. Find r if the circumference is 396 meters and π is 22/7.

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Answers (2)
  1. 20 December, 21:42
    0
    The radius of the circle is 63 meters

    Step-by-step explanation:

    circumference of a circle is given by the formula C=2πr

    It is given that,

    circumference is 396 meters

    To find the radius of circle

    C=2πr π = 22/7 C = 396

    2 * (22/7) * r = 396

    r = (396 * 7) / (2*22)

    r = 63

    Therefore the radius of given circle = 63 meters.
  2. 20 December, 22:52
    0
    r = 63 meters

    Step-by-step explanation:

    C=2πr

    We know pi and C

    396 = 2*22/7*r

    396 = 44/7 * r

    Multiply each side by 7/44 to isolate r

    396*7/44 = 7/44 * 44/7 * r

    63 = r
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