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The length x of rectangle is decreasing...

The length x of rectangle is decreasing at a rate of 3 `cm//min` and width y is increasing at a rate of 2 `cm//min` When x =10 cm and y=6 cm. Find the rate of change of(i) the perimeter (ii) the area of rectangle.

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The correct Answer is:
`(i) -2cm//min " "(ii) 2 cm^(2)//min`
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