I need help math diagnostics test. No links and no guesses give an answer the is related. If not will be reported.

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.

Which of the following is the shape of a cross section of the figure shown below

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319