Acircular oil slick is expanding at a rate of 2m^2/h. find the rate at which it's diameter is expanding when it's radius is 1.5m

Step-by-step explanation:

The circular oil slick is expanding at a rate of  

Let A be the area of the circular oil slick,

So, the changes in  A with respect to time (t),

Also, the change in diameter with respect to time(t),

For r = 1.5 m,

this shows a reflection over the x-axis and is translated one unit down and 6 units to the right (x + 6, y - 1)

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