Find the area of right triangle abc

What is the most accurate measurement of 1 pound

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.

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.