Asked by al
The radius of a circular oil slick expands at a rate of 8 m/min.
a. How fast is the area of the oil slick increasing when the radius is 30 m? = 480pi
b.If the radius is 0 at time t=0 , how fast is the area increasing after 2 mins?
i cannot get part b!
a. How fast is the area of the oil slick increasing when the radius is 30 m? = 480pi
b.If the radius is 0 at time t=0 , how fast is the area increasing after 2 mins?
i cannot get part b!
Answers
Answered by
Reiny
At a rate of 8 m/min, after 2 minutes the radius will be 16 m.
Now sub r=16 into your dA/dt you had in a)
Now sub r=16 into your dA/dt you had in a)
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