This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
The document root directory is /var/www/html and it's defined in /etc/httpd/conf/httpd.conf.
This isn't really the right forum for asking questions about Apache, though. Apache Tomcat isn't the same thing as Apache httpd. It's confusing, since we generally say "Tomcat" for Apache Tomcat, but "Apache" for Apache httpd.
Customer surveys are for companies who didn't pay proper attention to begin with.