Ineed with this as soon as possible!

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.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

What is the radius of the cone in the diagram? round your answer to the nearest whole number