Question 1025784
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An engineer designs a parabolic arch to support a bridge with a two-lane road underneath the arch. if the topmost point of the arch is 10 meters above the road and the base is 30 meters wide, can an 8-meter high container truck pass through the arch if it is 3 meters wide? support your answer.
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The condition is incomplete.


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1. According to the condition, the plane of the arch is perpendicular to the road lanes, correct? Usually it is not so.

   Why do not say it directly and explicitly ?


2. But it is still not a fatal deficiency.
   The fatal is that the distance between two lanes is not given.


Who invent such problems without thinking?
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