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A text book shows a circle with a line drawn through the centre and advises that the line represents the diameter of the circle, ok with that, but what happens if the circle was a pipe and the pipe had a hole drilled into it, so the pipe now has an outer diameter of 10 but the hole inside the pipe is 5.
How do you define the diameter of the pipe now, is it at the outer edge of the circle or the inner circle diameter, where the hole was drilled through?
Thanks.
How do you define the diameter of the pipe now, is it at the outer edge of the circle or the inner circle diameter, where the hole was drilled through?
Thanks.
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