SONAR Sonar is used by oceanographers to locate marine animals and to map the contours of the ocean floor. Sonar sends out sound pulses,
called pings, and receives the returning sound echo. Sonar uses the returning sound echo to detect the location of animals or the distance
from a rock formation. If each unit on the coordinate grid measures 1 mile, what area does the sonar system cover? Round to the nearest tenth.
