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If the chord length and arch height are known, the radius can be calculated
Let the arch height be h, the radius be r, and the chord length be l, then the Pythagorean theorem is used to obtain: (R-H) & sup2; + (L / 2) & sup2; = R & sup2;, and the data can be substituted into the solution
Given chord length and arch height, the formula of radius and chord center distance
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