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The length `x` of a rectangle is decreasing at the rate of 5 cm/minute and the width `y` is incr...

1,291 views · Published 20 February 2018 · 3:38 · Indexed 23 September 2026

Channel: Doubtnut · 2018 · Education

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This is the Solution of Question From RD SHARMA book of CLASS 12 CHAPTER APPLICATION OF DERIVATIVES This Question is also available in R S AGGARWAL book of CLASS 12 You can Find Solution of All Question From RD SHARMA and R S AGGARWAL book from class 6-12 on our app DOUBTNUT for Free



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==== QUESTION TEXT ====

The length `x` of a rectangle is decreasing at the rate of 5 cm/minute and the width `y` is increasing at the rate of 4 cm/minute. When `x=8c m` and `y=6,` find the rates of change of (i) the perimeter (ii) the area of the rectangle.

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