document.write( "Question 1208256: A two-lane road tunnel with a semicircular arch is 24 meters in diameter. The height of the tunnel at the end of each lane is √2/11meters. Determine the length of the road lanes. Give the coordinates or graph it \n" ); document.write( "

Algebra.Com's Answer #846561 by ikleyn(52788) $\"\"$ $\"About$

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\n" ); document.write( "A two-lane road tunnel with a semicircular arch is 24 meters in diameter.
\n" ); document.write( "The height of the tunnel at the end of each lane is √2/11meters.
\n" ); document.write( "Determine the length of the road lanes. Give the coordinates or graph it
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document.write( "Place the origin of the coordinate system at the ground level, at the middle \r\n" );
document.write( "of the diameter of the tunnel.\r\n" );
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document.write( "You will have semicircle with the radius 24/2 = 12 m.\r\n" );
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document.write( "An equation for this semicircle is  \r\n" );
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document.write( "    x^2 + y^2 = 12^2,\r\n" );
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document.write( "or\r\n" );
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document.write( "    x^2 = 144 - y^2.\r\n" );
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document.write( "Now substitute the given value of y into this formula and find x.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Strictly follow my instruction at every your step.\r
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