Question 1069094
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The distance from the center to the 10 cm chord is {{{sqrt(13^2-(10/2)^2)}}} = {{{sqrt(13^2-5^2)}}} = 12 cm.


The distance from the center to the 24 cm chord is {{{sqrt(13^2-(24/2)^2)}}} = {{{sqrt(13^2-12^2)}}} = 5 cm.


The distance between two given parallel chords is 12 + 5 = 17 cm.