Imagaine a wire wrapped snugly around the earth's equator. if the wire were made 100 feet longer to form a circle at uniform height above the earth's surface all the way around, how high off the ground would the wire be?

In the final seconds before the plane landed in the Hudson, the pilot slowed the plane.  While the plane slowed it climbed from 210 ft at 3:29.58 to 370 ft at 3:30.17. An elevation change of 160 ft over a distance of 2000 ft. What was the angle of ascent for the plane (e) as it slowed? Round your answer to the nearest hundredth (second decimal place).

A lighthouse-keeper 75 m above the ocean observes a ship sailing directly away from him. At 1 p.m. the angle of depression is 11° and 5 minutes later it is 4.5°. How fast is the ship travelling (in km/h)?

Find the perimeter