document.write( "Question 592130: Because of Earth's curvature, a person can see a limited distance to the horizon. The highere the location of a person, the farther that person can see. The distance D in miles to the horizon can be estimated by D(h) = 1.22√h, where h is the height of the person above the ground in feet. How high does a person need to be to see 23 miles? \n" ); document.write( "

Algebra.Com's Answer #375896 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
Because of Earth's curvature, a person can see a limited distance to the horizon.
\n" ); document.write( " The higher the location of a person, the farther that person can see.
\n" ); document.write( " The distance D in miles to the horizon can be estimated by D(h) = 1.22√h, where h is the height of the person above the ground in feet.
\n" ); document.write( " How high does a person need to be to see 23 miles?
\n" ); document.write( ":
\n" ); document.write( " $\"1.22sqrt%28h%29\"$ = 23
\n" ); document.write( ";
\n" ); document.write( " $\"sqrt%28h%29\"$ = $\"23%2F1.22\"$
\n" ); document.write( "Square both sides
\n" ); document.write( "h = 355.4 ft \n" ); document.write( "

\n" );