A radar operator on a ship discovers a large sunken vessel lying parallel to the ocean surface, 150 m directly below the ship. The length of the vessel is a clue to which wreck has been found. The radar
operator measures the angles of depression to the front and back of the sunken vessel to be 52º and 70°.
How long, to the nearest tenth of a metre, is the sunken vessel?

A 172.8 m
B 172.3 m
C 173.3 m
D 171.8 m

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?