Once you make it to the Center, you begin to search the ocean floor using acoustic location, i. e. sonar mapping, hoping that your instruments "hear" an acoustic reflection that differs from the rest of the ocean floor. Just as the sonar picks up a signal that seems different, the machine goes blank and becomes useless. However the technician assigned to the machine remembers a couple numbers: the ocean depth at this location is about 13,560 ft and the machine was scanning the circular region around the ship with a radius of 800 feet. Your crew decides to send down the two piloted submersibles to explore the region themselves. Required:
Using the dimensions given, first find the angle of depression the submersibles should follow in order to reach the edge of the circular region from your ship. Then, determine the area of the region in feet squared.