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QUESTION $3$ ~ $1$ POINT

An airplane is flying overhead at a constant elevation of $3000$ ft $.$ A man is viewing the plane from a position $4000$ ft from the base of a radio tower. The airplane is flying horizontally away from the man. If the plane is flying at a rate of $400f\frac{t}{s},$ at what rate is the distance between the man and the plane increasing when the plane passes over the radio tower?

Enter an exact answer.$)$

rovide your answer below:

The distance between the man and the plane is increasing at a rate of $$ feet per second.

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