RH9: i'm looking directory that containts apache, php, mysql

[Nofriyadi Nurdam]

Hi alls
I've installed RedHat 9 with the package : apache, php & mysql. Now I've to 
find the directories that containt apache, php & mysql. I've looked for them 
with rpm -qa | grep httpd, mysql and php and gotten httpd-2.0.40.21, 
mysql-3.23.54a-11 and php-4.2.2-17
Can you help me please to find them?
Thanks in advance
 -nofri