document.write( "Question 1025784: 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. \n" ); document.write( "

Algebra.Com's Answer #641094 by ikleyn(52788) $\"\"$ $\"About$

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\n" ); document.write( "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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\n" ); document.write( "\n" ); document.write( "The condition is incomplete.\r
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document.write( "1. According to the condition, the plane of the arch is perpendicular to the road lanes, correct? Usually it is not so.\r\n" );
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document.write( "   Why do not say it directly and explicitly ?\r\n" );
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document.write( "2. But it is still not a fatal deficiency.\r\n" );
document.write( "   The fatal is that the distance between two lanes is not given.\r\n" );
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document.write( "Who invent such problems without thinking?\r\n" );
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