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December 22, 2014

December 22, 2014

Posted by **Mostafa** on Saturday, May 4, 2013 at 6:58pm.

An isosceles triangle with a base of 20root3 cm long. If the length of the leg decreases at rate 3 cm/h, find the rate of decreasing of the area of the triangle in the instant at which the triange becomes equilateral.

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