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Question from Jim: If I know the length of a chord and its distance from the diameter, how do I calculate the radius of the circle? |
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Hi Jim. I've drawn two such chords on the same circle, one red and one green. Then I've drawn a diagonal radius from the end of each chord to the center of the circle, creating right triangles.
Hope this helps, |
Can you see why both diagonals are radii and in either case, you can determine the length by using the Pythagorean theorem? |
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