(4) At noon, ship A is 130 km west of ship B. Ship A is sailing east at 30 km/h and ship B is sailing north at 25 km/h. (a) What is the distance between the ships at 3:00 PM? (Round your answer four decimal places.) km (b) How fast is the distance between the ships changing at 3:00 PM? (Round your answer to two decimal places.) km/h

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