Answer:
AC and FD are congruent.
Explanation:
In the given circle two chords AC and FD have been drawn.
Distances of these chords from the center of the circle are equal = 7.12
As per theorem of chords : If two chords are equidistant from the center of the circle then the given chords will be equal in length.
Therefore, by the theorem AC and FD will be congruent.