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A plane flying with a constant speed of 300 km/h passes over a ground radar station at an altitude of 1 km and climbs at

A plane flying with a constant speed of 300 km/h passes over a ground radar station at an altitude of 1 km and climbs at an angle of 30. At what rate (in km/h) is the distance from the plane to the radar station increasing a minute later? (Round your answer to the nearest whole number.)

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