Posted by **Billy** on Monday, March 15, 2010 at 5:33pm.

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**, Monday, January 2, 2012 at 7:02pm
2.424

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