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Radius of a circle is half its diameter, 1/2 of 5cm =2.5cm

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Q: What is the radius of a circle if its diameter id 5cm?
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How do find the radius of a circle with the given diameter?

well, the radius is half of the diameter, so if i were you id divide by two


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30 x 3.14 = 94.2


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What does the abbreviation OD mean?

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The inside diameter (ID) is 8 inches. The nominal pipe size (NPS) and outside diameter (OD) depend on the thickness of the walls of the pipe.