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April 26, 2015

Homework Help: calculus

Posted by Anonymous on Monday, November 5, 2007 at 8:58pm.

1) A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second.

Find the rate at which the are of the triangle is changing when the base of the ladder is 7 feet from the wall.


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I did the Pythagorean to find the other side of the triangle and got 24. But I'm confused...am I looking for the dr/dt OR dv/dt? Or something else?

Help please!

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