Answer:
t = 18
Explanation:
Given that chords RS = 2t and PQ = (t+18) subtend arcs marked as congruent, you want to know the value of t.
Chords
Chords that subtend congruent arcs are congruent:
RS = PQ
2t = t +18
t = 18 . . . . . . . . subtract t
The value of t is 18.
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