Suppose oil spills from an offshore drilling platform and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 5 feet per second, how fast is the area of the spill increasing when the radius is 40 feet?

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Answer:

8sec

Step-by-step explanation:

5x8=40

1x8=8

so it takes 8sec to get 40feet radius of oil