Posted by Billy on .
a satellite camera takes a rectangular  shaped picture. the smallest region that can be photographed is a 4  km by 6  km rectangle. as the camera zooms out, the length l and width w of the rectangle increase at a rate of 3km/sec. how long does it take for the area A to be at least 4 times its original size?

Trigonometry 
Alexis,
2.424