Given that is a quadrilateral inscribed in a circle in which , cm,
and cm, find the length of approximated to nearest hundredth, if needed.
Since , the measure of arc must be equal to the
measure of arc .
In the same circle, if the measures of arcs are equal, then their
chords are equal in length. This means that the length of must
be equal to the length of . Now use this fact to solve for .
Finally, substitute for to find the length of .