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6 February, 10:57

What is the best estimate of the circumference of a circle with a diameter of 47mm: a) 141 mm b) 139mm c) 121mm d) 100mm

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  1. 6 February, 13:47
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    Circumference = pi x diameter

    C = (3.14) (47)

    C=147.58

    But if you're estimating, you would round pi (3.14) to 3.

    C = (3) (47)

    C=141

    Your answer is

    a) 141
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