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.
Correct Answer:
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