Need to find the perimeter of each figure. p= 2h+2h

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 area of the triangle shown 3 by 6

For the inequality |c| < |d| to be true, which of the following must be true?