A Pebble Is Dropped into a Calm Pond, Causing Ripples

question 320

Multiple Choice

A pebble is dropped into a calm pond, causing ripples in the form of concentric circles.The radius (in feet) of the outer ripple is , where t is the time in seconds after the pebble strikes the water.The area of the circle is given by the function .Find and interpret . ​

• A) ; represents the area of the circle at time t.
• B) ; represents the area of the circle at time t.
• C) ; represents the area of the circle at time t.
• D) ; represents the area of the circle at time t.
• E) ; represents the area of the circle at time t.

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