document.write( "Question 1119260: a flashlight is shape like a paraboloid, so that if its light bulb will then bounce off the surface in a focused direction that is parallel to axis. if the paraboloid ha depth of 1.8 in and the diameter on its surface is 6 in, how far should the light source be placed from the vertex? \n" ); document.write( "
Algebra.Com's Answer #734734 by ikleyn(52802)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "See the lesson \r
\n" ); document.write( "\n" ); document.write( "    - Practical problems from the archive related to ellipses and parabolas,   Problem 2\r
\n" ); document.write( "\n" ); document.write( "in this site,  where similar problem was solved.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Consider it as your sample.   Read it attentively.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Then substitute your data and find the answer.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "In this way,  you will learn on how to solve such problems.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );