how to determine the length of a curve with an yarn and liner scale? ??
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A curved line, also called an "arc," represents a portion of a circle. It is difficult to measure a curve with a straight-edged ruler with any kind of accuracy, but geometry provides a relatively simple way to calculate the length of an arc. You'll need a tool called a protractor and some basic information. You must also know the diameter of the circle. Then, you can apply the following formula: length of an arc = diameter x 3.14 x the angle divided by 360.
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how to determine the length of a curve with an yarn and liner scale? ??
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