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4 January, 12:29

The formula for the circumference of a circle is C = 2pi. Determine the circumference when the radius r is 10 cm. A. 100 approx cm C. 20 cm b. 20 pi cm d. 100 cm

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  1. 4 January, 12:35
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    Answer:b

    Step-by-step explanation:

    Circumference, C = 2pi*r

    =2*pi*10

    = 20pi cm
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