In Calm Waters Oil Spilling from the Ruptured Hull of a Grounded

question 307

Multiple Choice

In calm waters oil spilling from the ruptured hull of a grounded tanker spreads in all directions. If the area polluted is a circle and its radius is increasing at a rate of 5 ft/sec, determine how fast the area is increasing when the radius of the circle is 40 ft. ​

• A) 200 ft²/sec
• B) 400π ft²/sec
• C) 400 ft²/sec

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