(a) If A is the area of a circle with radius r and the circle expands as time passes, find da/dt in terms of dr/dt. dA d

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A If A Is The Area Of A Circle With Radius R And The Circle Expands As Time Passes Find Da Dt In Terms Of Dr Dt Da D 1 (14.63 KiB) Viewed 9 times

(a) If A is the area of a circle with radius r and the circle expands as time passes, find da/dt in terms of dr/dt. dA dr dt dt (b) Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 1 m/s, how fast is the area of the spill increasing when the radius is 23 m? m²/s