A chord is a part of a circle that joins two points on its circumference but does not pass through the center of the circle. From the given diagram in the question, GH = HJ. Thus the measure of chord HJ is option C. 8.6 units.
A chord is one of the parts of a circle which does not pass through its center but joins two points on its circumference. So that it is not the same as the radius of the circle.
In the given question, it has been stated that: GH and HJ are congruent.
So that by the congruency property of two lines, the length of chod GH is the same as the length of chord HJ.
Therefore, the measure of chord Hj is 8.6 units. This implies option C.
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