Question

radius of an oil slick explains at 2m/min
a) how fast is the oil slick increasing when radius is 25m

Answer 1

Given: r=25
dr/dt=2

\[2piR\]\[2piR*\frac{ dr }{dt } = 2\pi(25)*2\]

Answer 2

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Answer 3

What do you mean when you ask "how fast is the oil slick increasing" ? What about it is increasing? The area, assuming it's a perfectly flat disk?