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Adrienne Wood
Mathematics
22 May, 10:10
Circumference of a circle if diameter is 18
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Andrew
22 May, 10:18
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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.
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Kailey
22 May, 10:32
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Pie r squared
R = half of diameter
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