What is the missing number?

Plz which expression is equivalent to the expression below?

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74