Using the formula c=2r, find the circumference with diameter of 28inches. Round your answer to the nearest inch.

Question

Using the formula c=2r, find the circumference with diameter of 28inches. Round your answer to the nearest inch.

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    2021-09-19T06:55:58+00:00

    Radius is equal to 1/2 the diameter. The radius is 14 (28/2=14)

    With your formula:

    c=2*14

    c=28

    HOWEVER I believe you meant

    c=2(pi)r

    In which

    c=2(pi)14

    c=28(pi)

    In this instance for pi we can use 3.14 since we will be rounding anyway, so

    c=28*3.14

    c=87.92

    Rounded to be

    c=88

    Note:

    If we didn’t round pi out to 3.14 we would have gotten 87.964594…

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