document.write( "Question 1121022: A conference room is shaped like semi-elliptic arch. The height of the arch is 5m and its width is 16m.
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Algebra.Com's Answer #736758 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "According to the condition, the ellipse (or semi-ellipse)  semi-minor and semi-major axes are 5 m and 16/2 = 8 m, respectively.\r\n" );
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document.write( "Hence, the linear eccentricity is   = 6.245 m.\r\n" );
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document.write( "It is the distance from the center of the semi-ellipse to its focuses.\r\n" );
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document.write( "Answer.  The two friends should stay at the focuses of the ellipse that are located at the distance of 6.245 m from the center of the ellipse.\r\n" );
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\n" ); document.write( "\n" ); document.write( "P.S.   To be exactly precise, the two friends should LIE on the floor at that locations to have their mouths and their ears \r
\n" ); document.write( "\n" ); document.write( "maximally close to the focuses :-).\r
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\n" ); document.write( "\n" ); document.write( "For relevant lessons, see\r
\n" ); document.write( "\n" ); document.write( "    - Ellipse definition, canonical equation, characteristic points and elements \r
\n" ); document.write( "\n" ); document.write( "    - Ellipse focal property \r
\n" ); document.write( "\n" ); document.write( "    - Tangent lines and normal vectors to a circle \r
\n" ); document.write( "\n" ); document.write( "    - Tangent lines and normal vectors to an ellipse \r
\n" ); document.write( "\n" ); document.write( "    - Optical property of an ellipse \r
\n" ); document.write( "\n" ); document.write( "    - Optical property of an ellipse revisited \r
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\n" ); document.write( "\n" ); document.write( "    - Practical problems from the archive related to ellipses and parabolas \r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-II in this site\r
\n" ); document.write( "\n" ); document.write( "    ALGEBRA-II - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic
\n" ); document.write( "\"Conic sections: Ellipses. Definition, major elements and properties. Solved problems\".\r
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\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Save the link to this textbook together with its description\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-II
\n" ); document.write( "https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "into your archive and use when it is needed.\r
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\n" ); document.write( "\n" ); document.write( "Comment from student :   Thank you so much maam. How about the letter B? \r
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\n" ); document.write( "\n" ); document.write( "My response :   I answered both questions. Read my answer attentively . . . \r
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