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13 July, 13:14

8. For a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is needed for a button with a circumference of 7.38 centimeters? (Use the value of 3.14 to represent pi.)

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  1. 13 July, 13:30
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    d=2.35cm

    Step-by-step explanation:

    A circumference is the perimeter of a circle.

    P = 7.38cm

    The perimeter formula of a circumference is:

    P = 2 * π * r

    2 * r = d (circumference diameter)

    Thus:

    P = π * d

    d = P / π

    d = 7.38cm / 3.14

    d = 2.35cm
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