A pebble is dropped into a calm pond, causing ripples in the form of concentric circles. The radius of the outer ripple is increasing at a constant rate of 6 inches per second. When the radius is 4 feet, at what rate (in ft2/sec) is the total area A of the disturbed water changing
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ft
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A pebble is dropped into a calm pond, causing ripples in the form of concentric circles. The radius...
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