document.write( "Question 322186: A student who is 4 feet tall estimates the height of a lamppost. The student stands 30 feet from the bast of the lamppost and measures her shadow from the light as 6 feet long. Approximately how high is the lamppost? \n" ); document.write( "
Algebra.Com's Answer #230644 by galactus(183)\"\" \"About 
You can put this solution on YOUR website!
This is a proportion problem using similar triangles.\r
\n" ); document.write( "\n" ); document.write( "Let the height of the lamp be y.\r
\n" ); document.write( "\n" ); document.write( "Her height is 4. Since she is 30 feet from the lamp and her shadow is 6 feet long, then the tip of her shadow is 36 feet from the post.\r
\n" ); document.write( "\n" ); document.write( "\"y%2F36=4%2F6\". Solve for y.\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );