# The length of a rectangle is increasing at a rate of 3 cm/s and its width is increasing at a rate of 9 cm/s. When the length is11 cm and the width is 5 cm, how fast is the area of the rectangle increasing?cm?/s

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2 views help_outlineImage TranscriptioncloseThe length of a rectangle is increasing at a rate of 3 cm/s and its width is increasing at a rate of 9 cm/s. When the length is 11 cm and the width is 5 cm, how fast is the area of the rectangle increasing? cm?/s fullscreen
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Step 1

Consider the given situation,

Let the length of the rectangle be ‘l’ and breadth be ‘b’.

Area of rectangle is given as product of length and breadth.

Step 2

To calculate the rate of change of area, we will have to make an equation using the equation ...

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