You can put this solution on YOUR website! What is the length of each side of a 24 sided polygon with a diameter of 39 inches?
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sum of all interior angles = (39-2)*180 = 6660 degrees
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Each interior angle = 6660/39 = approx 170 degrees
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Draw the figure and you will see you have isosceles triangle
with base angles of 170/2 = 85 degree and equal sides of 39/2
= 19.5
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The 3rd angle is 10 degrees
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Use the Law of Cosines to find the length of the 3rd side.
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Cheers,
Stan H.
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