Most often, the chord length is needed in order to properly construct and mark a very common technique in flanged connections. When this is meant that the chord, which is located between the centers of adjacent holes. Knowing this parameter, you can not only make a correct drawing, in which in the future will be made flanges, and subsequently verify the accuracy of their manufacture.
Chord length is a free educational mobile app By .It helps students in grades HS practice the following standards HSG.C.A.2.
1. HSG.C.A.2 : Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle.