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A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore?

8 km/h

25 km/h

30.4 km/h

32.8 km/h

  • Physics -

    It is sqrt(30^2 + 5^2)= 30.4 km/h

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