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2 August, 23:40

Circumference of a circle if diameter is 18

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  1. 3 August, 03:09
    0
    The formula for circumference is 2piR, with R being the radius, which is half of the diameter. If the diameter is 18, the radius if 9 (half of 18).

    Thus the formula is 2pi (9), which simplifies to 18pi.
  2. 3 August, 03:14
    0
    Pie r squared

    R = half of diameter
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