The base of a 13 foot ladder that is leaning against a wall begins to slide away from the wa When the base is 12 ft from the wall and moving at the rate of 8 feet per second, how fast the top of the ladder sliding down the wall.

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A: A 12 foot ladder is leaning against a wall. If the top slips down the wall at a rate of 4ft/s.

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A: We solve the above problem.